Home / 135,023.71-186,327.10-77,658.70

Finding the Fourth Proportional to 135,023.71, 186,327.10 and 77,658.70

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Solution

The fourth proportional to 135,023.71, 186,327.10 and 77,658.70 is: 107,165.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,023.71 : 186,327.10 = 77,658.70 : x
  2. Step 2: Convert to fraction form
    135,023.71/186,327.10 = 77,658.70/x
  3. Step 3: Cross multiply
    135,023.71x = 186,327.10 × 77,658.70
  4. Step 4: Simplify right side
    135,023.71x = 14,469,920,360.77
  5. Step 5: Solve for x
    x = 14,469,920,360.77/135,023.71
  6. Step 6: Final answer
    x = 107,165.77

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1.5x scale

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.