Home / 99,913.23-137,878.63-54,590.23

Finding the Fourth Proportional to 99,913.23, 137,878.63 and 54,590.23

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Solution

The fourth proportional to 99,913.23, 137,878.63 and 54,590.23 is: 75,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,913.23 : 137,878.63 = 54,590.23 : x
  2. Step 2: Convert to fraction form
    99,913.23/137,878.63 = 54,590.23/x
  3. Step 3: Cross multiply
    99,913.23x = 137,878.63 × 54,590.23
  4. Step 4: Simplify right side
    99,913.23x = 7,526,826,123.78
  5. Step 5: Solve for x
    x = 7,526,826,123.78/99,913.23
  6. Step 6: Final answer
    x = 75,333.63

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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.