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Finding the Fourth Proportional to 99,301, 137,152.38 and 65,708.68

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Solution

The fourth proportional to 99,301, 137,152.38 and 65,708.68 is: 90,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,301 : 137,152.38 = 65,708.68 : x
  2. Step 2: Convert to fraction form
    99,301/137,152.38 = 65,708.68/x
  3. Step 3: Cross multiply
    99,301x = 137,152.38 × 65,708.68
  4. Step 4: Simplify right side
    99,301x = 9,012,101,848.66
  5. Step 5: Solve for x
    x = 9,012,101,848.66/99,301
  6. Step 6: Final answer
    x = 90,755.40

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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.