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Finding the Fourth Proportional to 99,304.70, 137,043.15 and 53,985.72

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Solution

The fourth proportional to 99,304.70, 137,043.15 and 53,985.72 is: 74,501.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,304.70 : 137,043.15 = 53,985.72 : x
  2. Step 2: Convert to fraction form
    99,304.70/137,043.15 = 53,985.72/x
  3. Step 3: Cross multiply
    99,304.70x = 137,043.15 × 53,985.72
  4. Step 4: Simplify right side
    99,304.70x = 7,398,373,123.82
  5. Step 5: Solve for x
    x = 7,398,373,123.82/99,304.70
  6. Step 6: Final answer
    x = 74,501.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.