Home / 99,509.96-137,319.16-54,187.76

Finding the Fourth Proportional to 99,509.96, 137,319.16 and 54,187.76

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Solution

The fourth proportional to 99,509.96, 137,319.16 and 54,187.76 is: 74,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,509.96 : 137,319.16 = 54,187.76 : x
  2. Step 2: Convert to fraction form
    99,509.96/137,319.16 = 54,187.76/x
  3. Step 3: Cross multiply
    99,509.96x = 137,319.16 × 54,187.76
  4. Step 4: Simplify right side
    99,509.96x = 7,441,017,685.48
  5. Step 5: Solve for x
    x = 7,441,017,685.48/99,509.96
  6. Step 6: Final answer
    x = 74,776.61

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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.