Home / 99,915.08-137,878.71-54,594.62

Finding the Fourth Proportional to 99,915.08, 137,878.71 and 54,594.62

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Solution

The fourth proportional to 99,915.08, 137,878.71 and 54,594.62 is: 75,338.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,915.08 : 137,878.71 = 54,594.62 : x
  2. Step 2: Convert to fraction form
    99,915.08/137,878.71 = 54,594.62/x
  3. Step 3: Cross multiply
    99,915.08x = 137,878.71 × 54,594.62
  4. Step 4: Simplify right side
    99,915.08x = 7,527,435,505.57
  5. Step 5: Solve for x
    x = 7,527,435,505.57/99,915.08
  6. Step 6: Final answer
    x = 75,338.33

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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.