Home / 91,418.40-137,127.36-29,088.72

Finding the Fourth Proportional to 91,418.40, 137,127.36 and 29,088.72

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Solution

The fourth proportional to 91,418.40, 137,127.36 and 29,088.72 is: 43,633.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,418.40 : 137,127.36 = 29,088.72 : x
  2. Step 2: Convert to fraction form
    91,418.40/137,127.36 = 29,088.72/x
  3. Step 3: Cross multiply
    91,418.40x = 137,127.36 × 29,088.72
  4. Step 4: Simplify right side
    91,418.40x = 3,988,859,379.38
  5. Step 5: Solve for x
    x = 3,988,859,379.38/91,418.40
  6. Step 6: Final answer
    x = 43,633.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.