Home / 91,392.18-137,129.13-58,103.34

Finding the Fourth Proportional to 91,392.18, 137,129.13 and 58,103.34

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Solution

The fourth proportional to 91,392.18, 137,129.13 and 58,103.34 is: 87,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,392.18 : 137,129.13 = 58,103.34 : x
  2. Step 2: Convert to fraction form
    91,392.18/137,129.13 = 58,103.34/x
  3. Step 3: Cross multiply
    91,392.18x = 137,129.13 × 58,103.34
  4. Step 4: Simplify right side
    91,392.18x = 7,967,660,464.29
  5. Step 5: Solve for x
    x = 7,967,660,464.29/91,392.18
  6. Step 6: Final answer
    x = 87,180.99

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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.