Home / 87,421,898-128,298,495

Finding the Third Proportional to 87,421,898 and 128,298,495

Calculator

Solution

The third proportional to 87,421,898 and 128,298,495 is: 188,288,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421,898 : 128,298,495 = 128,298,495 : x
  2. Step 2: Convert to fraction form
    87,421,898/128,298,495 = 128,298,495/x
  3. Step 3: Cross multiply
    87,421,898x = 128,298,495 × 128,298,495
  4. Step 4: Simplify right side
    87,421,898x = 16,460,503,819,265,024
  5. Step 5: Solve for x
    x = 16,460,503,819,265,024/87,421,898
  6. Step 6: Final answer
    x = 188,288,108.54

Related Problems

Find third proportional to 43,710,949 and 64,149,247.50
Half scale
Find third proportional to 174,843,796 and 256,596,990
Double scale
Find third proportional to 87,421,900 and 128,298,498
Similar ratio
Find third proportional to 131,132,847 and 192,447,742.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.