Home / 128,180.67-176,892.08-71,592.15

Finding the Fourth Proportional to 128,180.67, 176,892.08 and 71,592.15

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Solution

The fourth proportional to 128,180.67, 176,892.08 and 71,592.15 is: 98,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,180.67 : 176,892.08 = 71,592.15 : x
  2. Step 2: Convert to fraction form
    128,180.67/176,892.08 = 71,592.15/x
  3. Step 3: Cross multiply
    128,180.67x = 176,892.08 × 71,592.15
  4. Step 4: Simplify right side
    128,180.67x = 12,664,083,967.21
  5. Step 5: Solve for x
    x = 12,664,083,967.21/128,180.67
  6. Step 6: Final answer
    x = 98,798.70

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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.