Home / 99,654.12-137,520.90-54,334.08

Finding the Fourth Proportional to 99,654.12, 137,520.90 and 54,334.08

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Solution

The fourth proportional to 99,654.12, 137,520.90 and 54,334.08 is: 74,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654.12 : 137,520.90 = 54,334.08 : x
  2. Step 2: Convert to fraction form
    99,654.12/137,520.90 = 54,334.08/x
  3. Step 3: Cross multiply
    99,654.12x = 137,520.90 × 54,334.08
  4. Step 4: Simplify right side
    99,654.12x = 7,472,071,582.27
  5. Step 5: Solve for x
    x = 7,472,071,582.27/99,654.12
  6. Step 6: Final answer
    x = 74,980.06

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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.