Home / 134,280.20-185,292.15-77,681

Finding the Fourth Proportional to 134,280.20, 185,292.15 and 77,681

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Solution

The fourth proportional to 134,280.20, 185,292.15 and 77,681 is: 107,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,280.20 : 185,292.15 = 77,681 : x
  2. Step 2: Convert to fraction form
    134,280.20/185,292.15 = 77,681/x
  3. Step 3: Cross multiply
    134,280.20x = 185,292.15 × 77,681
  4. Step 4: Simplify right side
    134,280.20x = 14,393,679,504.15
  5. Step 5: Solve for x
    x = 14,393,679,504.15/134,280.20
  6. Step 6: Final answer
    x = 107,191.38

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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.