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Finding the Fourth Proportional to 147,215.85, 203,158.85 and 83,554.71

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Solution

The fourth proportional to 147,215.85, 203,158.85 and 83,554.71 is: 115,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,215.85 : 203,158.85 = 83,554.71 : x
  2. Step 2: Convert to fraction form
    147,215.85/203,158.85 = 83,554.71/x
  3. Step 3: Cross multiply
    147,215.85x = 203,158.85 × 83,554.71
  4. Step 4: Simplify right side
    147,215.85x = 16,974,878,377.91
  5. Step 5: Solve for x
    x = 16,974,878,377.91/147,215.85
  6. Step 6: Final answer
    x = 115,306.05

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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.