Home / 128,312.10-177,055.23-70,943.67

Finding the Fourth Proportional to 128,312.10, 177,055.23 and 70,943.67

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Solution

The fourth proportional to 128,312.10, 177,055.23 and 70,943.67 is: 97,893.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,312.10 : 177,055.23 = 70,943.67 : x
  2. Step 2: Convert to fraction form
    128,312.10/177,055.23 = 70,943.67/x
  3. Step 3: Cross multiply
    128,312.10x = 177,055.23 × 70,943.67
  4. Step 4: Simplify right side
    128,312.10x = 12,560,947,808.89
  5. Step 5: Solve for x
    x = 12,560,947,808.89/128,312.10
  6. Step 6: Final answer
    x = 97,893.71

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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.