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Finding the Fourth Proportional to 153,354.90, 230,130.69 and 74,426.10

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Solution

The fourth proportional to 153,354.90, 230,130.69 and 74,426.10 is: 111,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,354.90 : 230,130.69 = 74,426.10 : x
  2. Step 2: Convert to fraction form
    153,354.90/230,130.69 = 74,426.10/x
  3. Step 3: Cross multiply
    153,354.90x = 230,130.69 × 74,426.10
  4. Step 4: Simplify right side
    153,354.90x = 17,127,729,747.01
  5. Step 5: Solve for x
    x = 17,127,729,747.01/153,354.90
  6. Step 6: Final answer
    x = 111,686.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.