Home / 128,010.24-176,657.76-71,420.40

Finding the Fourth Proportional to 128,010.24, 176,657.76 and 71,420.40

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Solution

The fourth proportional to 128,010.24, 176,657.76 and 71,420.40 is: 98,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,010.24 : 176,657.76 = 71,420.40 : x
  2. Step 2: Convert to fraction form
    128,010.24/176,657.76 = 71,420.40/x
  3. Step 3: Cross multiply
    128,010.24x = 176,657.76 × 71,420.40
  4. Step 4: Simplify right side
    128,010.24x = 12,616,967,882.30
  5. Step 5: Solve for x
    x = 12,616,967,882.30/128,010.24
  6. Step 6: Final answer
    x = 98,562.18

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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.