Home / 102,928-142,044.48-58,215.04

Finding the Fourth Proportional to 102,928, 142,044.48 and 58,215.04

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Solution

The fourth proportional to 102,928, 142,044.48 and 58,215.04 is: 80,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,928 : 142,044.48 = 58,215.04 : x
  2. Step 2: Convert to fraction form
    102,928/142,044.48 = 58,215.04/x
  3. Step 3: Cross multiply
    102,928x = 142,044.48 × 58,215.04
  4. Step 4: Simplify right side
    102,928x = 8,269,125,084.98
  5. Step 5: Solve for x
    x = 8,269,125,084.98/102,928
  6. Step 6: Final answer
    x = 80,338.93

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1.5x scale

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.