Home / 99,387.06-137,151.67-56,942.86

Finding the Fourth Proportional to 99,387.06, 137,151.67 and 56,942.86

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Solution

The fourth proportional to 99,387.06, 137,151.67 and 56,942.86 is: 78,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.06 : 137,151.67 = 56,942.86 : x
  2. Step 2: Convert to fraction form
    99,387.06/137,151.67 = 56,942.86/x
  3. Step 3: Cross multiply
    99,387.06x = 137,151.67 × 56,942.86
  4. Step 4: Simplify right side
    99,387.06x = 7,809,807,515.46
  5. Step 5: Solve for x
    x = 7,809,807,515.46/99,387.06
  6. Step 6: Final answer
    x = 78,579.72

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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.