Home / 128,102.18-176,796.54-74,387.18

Finding the Fourth Proportional to 128,102.18, 176,796.54 and 74,387.18

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Solution

The fourth proportional to 128,102.18, 176,796.54 and 74,387.18 is: 102,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,102.18 : 176,796.54 = 74,387.18 : x
  2. Step 2: Convert to fraction form
    128,102.18/176,796.54 = 74,387.18/x
  3. Step 3: Cross multiply
    128,102.18x = 176,796.54 × 74,387.18
  4. Step 4: Simplify right side
    128,102.18x = 13,151,396,044.36
  5. Step 5: Solve for x
    x = 13,151,396,044.36/128,102.18
  6. Step 6: Final answer
    x = 102,663.33

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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.