Home / 138,949.41-191,753.75-85,264.10

Finding the Fourth Proportional to 138,949.41, 191,753.75 and 85,264.10

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Solution

The fourth proportional to 138,949.41, 191,753.75 and 85,264.10 is: 117,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,949.41 : 191,753.75 = 85,264.10 : x
  2. Step 2: Convert to fraction form
    138,949.41/191,753.75 = 85,264.10/x
  3. Step 3: Cross multiply
    138,949.41x = 191,753.75 × 85,264.10
  4. Step 4: Simplify right side
    138,949.41x = 16,349,710,169.77
  5. Step 5: Solve for x
    x = 16,349,710,169.77/138,949.41
  6. Step 6: Final answer
    x = 117,666.64

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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.