Home / 138,949.04-191,753.24-85,263.72

Finding the Fourth Proportional to 138,949.04, 191,753.24 and 85,263.72

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Solution

The fourth proportional to 138,949.04, 191,753.24 and 85,263.72 is: 117,666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,949.04 : 191,753.24 = 85,263.72 : x
  2. Step 2: Convert to fraction form
    138,949.04/191,753.24 = 85,263.72/x
  3. Step 3: Cross multiply
    138,949.04x = 191,753.24 × 85,263.72
  4. Step 4: Simplify right side
    138,949.04x = 16,349,594,138.13
  5. Step 5: Solve for x
    x = 16,349,594,138.13/138,949.04
  6. Step 6: Final answer
    x = 117,666.12

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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.