Home / 91,469.18-137,199.63-38,139.18

Finding the Fourth Proportional to 91,469.18, 137,199.63 and 38,139.18

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Solution

The fourth proportional to 91,469.18, 137,199.63 and 38,139.18 is: 57,207.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,469.18 : 137,199.63 = 38,139.18 : x
  2. Step 2: Convert to fraction form
    91,469.18/137,199.63 = 38,139.18/x
  3. Step 3: Cross multiply
    91,469.18x = 137,199.63 × 38,139.18
  4. Step 4: Simplify right side
    91,469.18x = 5,232,681,384.50
  5. Step 5: Solve for x
    x = 5,232,681,384.50/91,469.18
  6. Step 6: Final answer
    x = 57,207.05

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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.