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Finding the Fourth Proportional to 119,892.90, 165,456.21 and 65,448.30

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Solution

The fourth proportional to 119,892.90, 165,456.21 and 65,448.30 is: 90,320.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,892.90 : 165,456.21 = 65,448.30 : x
  2. Step 2: Convert to fraction form
    119,892.90/165,456.21 = 65,448.30/x
  3. Step 3: Cross multiply
    119,892.90x = 165,456.21 × 65,448.30
  4. Step 4: Simplify right side
    119,892.90x = 10,828,827,668.94
  5. Step 5: Solve for x
    x = 10,828,827,668.94/119,892.90
  6. Step 6: Final answer
    x = 90,320.84

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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.