Home / 138,526.64-191,152.14-78,095.78

Finding the Fourth Proportional to 138,526.64, 191,152.14 and 78,095.78

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Solution

The fourth proportional to 138,526.64, 191,152.14 and 78,095.78 is: 107,763.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,526.64 : 191,152.14 = 78,095.78 : x
  2. Step 2: Convert to fraction form
    138,526.64/191,152.14 = 78,095.78/x
  3. Step 3: Cross multiply
    138,526.64x = 191,152.14 × 78,095.78
  4. Step 4: Simplify right side
    138,526.64x = 14,928,175,471.97
  5. Step 5: Solve for x
    x = 14,928,175,471.97/138,526.64
  6. Step 6: Final answer
    x = 107,763.93

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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.