Home / 129,302.01-178,438.95-71,945.91

Finding the Fourth Proportional to 129,302.01, 178,438.95 and 71,945.91

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Solution

The fourth proportional to 129,302.01, 178,438.95 and 71,945.91 is: 99,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.01 : 178,438.95 = 71,945.91 : x
  2. Step 2: Convert to fraction form
    129,302.01/178,438.95 = 71,945.91/x
  3. Step 3: Cross multiply
    129,302.01x = 178,438.95 × 71,945.91
  4. Step 4: Simplify right side
    129,302.01x = 12,837,952,637.19
  5. Step 5: Solve for x
    x = 12,837,952,637.19/129,302.01
  6. Step 6: Final answer
    x = 99,286.57

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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.