Home / 99,590.50-137,437.77-54,881.38

Finding the Fourth Proportional to 99,590.50, 137,437.77 and 54,881.38

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Solution

The fourth proportional to 99,590.50, 137,437.77 and 54,881.38 is: 75,737.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,590.50 : 137,437.77 = 54,881.38 : x
  2. Step 2: Convert to fraction form
    99,590.50/137,437.77 = 54,881.38/x
  3. Step 3: Cross multiply
    99,590.50x = 137,437.77 × 54,881.38
  4. Step 4: Simplify right side
    99,590.50x = 7,542,774,481.72
  5. Step 5: Solve for x
    x = 7,542,774,481.72/99,590.50
  6. Step 6: Final answer
    x = 75,737.89

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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.