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Finding the Fourth Proportional to 97,705.20, 146,557.80 and 84,874.80

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Solution

The fourth proportional to 97,705.20, 146,557.80 and 84,874.80 is: 127,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,705.20 : 146,557.80 = 84,874.80 : x
  2. Step 2: Convert to fraction form
    97,705.20/146,557.80 = 84,874.80/x
  3. Step 3: Cross multiply
    97,705.20x = 146,557.80 × 84,874.80
  4. Step 4: Simplify right side
    97,705.20x = 12,439,063,963.44
  5. Step 5: Solve for x
    x = 12,439,063,963.44/97,705.20
  6. Step 6: Final answer
    x = 127,312.20

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1.5x scale

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.