Home / 138,730.46-191,448.38-75,068.92

Finding the Fourth Proportional to 138,730.46, 191,448.38 and 75,068.92

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Solution

The fourth proportional to 138,730.46, 191,448.38 and 75,068.92 is: 103,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,730.46 : 191,448.38 = 75,068.92 : x
  2. Step 2: Convert to fraction form
    138,730.46/191,448.38 = 75,068.92/x
  3. Step 3: Cross multiply
    138,730.46x = 191,448.38 × 75,068.92
  4. Step 4: Simplify right side
    138,730.46x = 14,371,823,122.35
  5. Step 5: Solve for x
    x = 14,371,823,122.35/138,730.46
  6. Step 6: Final answer
    x = 103,595.30

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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.