Home / 103,345.17-155,017.75-68,276.62

Finding the Fourth Proportional to 103,345.17, 155,017.75 and 68,276.62

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Solution

The fourth proportional to 103,345.17, 155,017.75 and 68,276.62 is: 102,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,345.17 : 155,017.75 = 68,276.62 : x
  2. Step 2: Convert to fraction form
    103,345.17/155,017.75 = 68,276.62/x
  3. Step 3: Cross multiply
    103,345.17x = 155,017.75 × 68,276.62
  4. Step 4: Simplify right side
    103,345.17x = 10,584,088,161.10
  5. Step 5: Solve for x
    x = 10,584,088,161.10/103,345.17
  6. Step 6: Final answer
    x = 102,414.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.