Home / 138,470.24-191,088.60-74,807.84

Finding the Fourth Proportional to 138,470.24, 191,088.60 and 74,807.84

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Solution

The fourth proportional to 138,470.24, 191,088.60 and 74,807.84 is: 103,234.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,470.24 : 191,088.60 = 74,807.84 : x
  2. Step 2: Convert to fraction form
    138,470.24/191,088.60 = 74,807.84/x
  3. Step 3: Cross multiply
    138,470.24x = 191,088.60 × 74,807.84
  4. Step 4: Simplify right side
    138,470.24x = 14,294,925,414.62
  5. Step 5: Solve for x
    x = 14,294,925,414.62/138,470.24
  6. Step 6: Final answer
    x = 103,234.64

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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.