Home / 99,387.54-137,158.40-56,954.28

Finding the Fourth Proportional to 99,387.54, 137,158.40 and 56,954.28

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Solution

The fourth proportional to 99,387.54, 137,158.40 and 56,954.28 is: 78,598.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.54 : 137,158.40 = 56,954.28 : x
  2. Step 2: Convert to fraction form
    99,387.54/137,158.40 = 56,954.28/x
  3. Step 3: Cross multiply
    99,387.54x = 137,158.40 × 56,954.28
  4. Step 4: Simplify right side
    99,387.54x = 7,811,757,917.95
  5. Step 5: Solve for x
    x = 7,811,757,917.95/99,387.54
  6. Step 6: Final answer
    x = 78,598.97

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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.