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Finding the Fourth Proportional to 153,999.60, 231,031.80 and 65,207.40

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Solution

The fourth proportional to 153,999.60, 231,031.80 and 65,207.40 is: 97,824.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,999.60 : 231,031.80 = 65,207.40 : x
  2. Step 2: Convert to fraction form
    153,999.60/231,031.80 = 65,207.40/x
  3. Step 3: Cross multiply
    153,999.60x = 231,031.80 × 65,207.40
  4. Step 4: Simplify right side
    153,999.60x = 15,064,982,995.32
  5. Step 5: Solve for x
    x = 15,064,982,995.32/153,999.60
  6. Step 6: Final answer
    x = 97,824.82

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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.