Home / 99,860.72-137,807.08-54,538.70

Finding the Fourth Proportional to 99,860.72, 137,807.08 and 54,538.70

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Solution

The fourth proportional to 99,860.72, 137,807.08 and 54,538.70 is: 75,263.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,860.72 : 137,807.08 = 54,538.70 : x
  2. Step 2: Convert to fraction form
    99,860.72/137,807.08 = 54,538.70/x
  3. Step 3: Cross multiply
    99,860.72x = 137,807.08 × 54,538.70
  4. Step 4: Simplify right side
    99,860.72x = 7,515,818,168.61
  5. Step 5: Solve for x
    x = 7,515,818,168.61/99,860.72
  6. Step 6: Final answer
    x = 75,263.01

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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.