Home / 99,864.77-137,812.64-54,542.75

Finding the Fourth Proportional to 99,864.77, 137,812.64 and 54,542.75

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Solution

The fourth proportional to 99,864.77, 137,812.64 and 54,542.75 is: 75,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,864.77 : 137,812.64 = 54,542.75 : x
  2. Step 2: Convert to fraction form
    99,864.77/137,812.64 = 54,542.75/x
  3. Step 3: Cross multiply
    99,864.77x = 137,812.64 × 54,542.75
  4. Step 4: Simplify right side
    99,864.77x = 7,516,679,408.58
  5. Step 5: Solve for x
    x = 7,516,679,408.58/99,864.77
  6. Step 6: Final answer
    x = 75,268.58

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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.