Home / 128,152.85-176,847.51-70,790.94

Finding the Fourth Proportional to 128,152.85, 176,847.51 and 70,790.94

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Solution

The fourth proportional to 128,152.85, 176,847.51 and 70,790.94 is: 97,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,152.85 : 176,847.51 = 70,790.94 : x
  2. Step 2: Convert to fraction form
    128,152.85/176,847.51 = 70,790.94/x
  3. Step 3: Cross multiply
    128,152.85x = 176,847.51 × 70,790.94
  4. Step 4: Simplify right side
    128,152.85x = 12,519,200,231.37
  5. Step 5: Solve for x
    x = 12,519,200,231.37/128,152.85
  6. Step 6: Final answer
    x = 97,689.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.