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Finding the Fourth Proportional to 99,776.07, 137,690.99 and 74,304.30

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Solution

The fourth proportional to 99,776.07, 137,690.99 and 74,304.30 is: 102,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,776.07 : 137,690.99 = 74,304.30 : x
  2. Step 2: Convert to fraction form
    99,776.07/137,690.99 = 74,304.30/x
  3. Step 3: Cross multiply
    99,776.07x = 137,690.99 × 74,304.30
  4. Step 4: Simplify right side
    99,776.07x = 10,231,032,256.74
  5. Step 5: Solve for x
    x = 10,231,032,256.74/99,776.07
  6. Step 6: Final answer
    x = 102,539.94

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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.