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Finding the Fourth Proportional to 99,387.91, 137,153.91 and 54,066.23

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Solution

The fourth proportional to 99,387.91, 137,153.91 and 54,066.23 is: 74,610.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.91 : 137,153.91 = 54,066.23 : x
  2. Step 2: Convert to fraction form
    99,387.91/137,153.91 = 54,066.23/x
  3. Step 3: Cross multiply
    99,387.91x = 137,153.91 × 54,066.23
  4. Step 4: Simplify right side
    99,387.91x = 7,415,395,342.13
  5. Step 5: Solve for x
    x = 7,415,395,342.13/99,387.91
  6. Step 6: Final answer
    x = 74,610.64

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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.