Home / 99,486.15-137,302.65-55,885.92

Finding the Fourth Proportional to 99,486.15, 137,302.65 and 55,885.92

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Solution

The fourth proportional to 99,486.15, 137,302.65 and 55,885.92 is: 77,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,486.15 : 137,302.65 = 55,885.92 : x
  2. Step 2: Convert to fraction form
    99,486.15/137,302.65 = 55,885.92/x
  3. Step 3: Cross multiply
    99,486.15x = 137,302.65 × 55,885.92
  4. Step 4: Simplify right side
    99,486.15x = 7,673,284,913.69
  5. Step 5: Solve for x
    x = 7,673,284,913.69/99,486.15
  6. Step 6: Final answer
    x = 77,129.18

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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.