Home / 102,280.01-141,143.78-99,261.95

Finding the Fourth Proportional to 102,280.01, 141,143.78 and 99,261.95

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Solution

The fourth proportional to 102,280.01, 141,143.78 and 99,261.95 is: 136,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,280.01 : 141,143.78 = 99,261.95 : x
  2. Step 2: Convert to fraction form
    102,280.01/141,143.78 = 99,261.95/x
  3. Step 3: Cross multiply
    102,280.01x = 141,143.78 × 99,261.95
  4. Step 4: Simplify right side
    102,280.01x = 14,010,206,375.61
  5. Step 5: Solve for x
    x = 14,010,206,375.61/102,280.01
  6. Step 6: Final answer
    x = 136,978.94

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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.