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Finding the Fourth Proportional to 146,612.90, 219,820.80 and 57,820.70

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Solution

The fourth proportional to 146,612.90, 219,820.80 and 57,820.70 is: 86,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,612.90 : 219,820.80 = 57,820.70 : x
  2. Step 2: Convert to fraction form
    146,612.90/219,820.80 = 57,820.70/x
  3. Step 3: Cross multiply
    146,612.90x = 219,820.80 × 57,820.70
  4. Step 4: Simplify right side
    146,612.90x = 12,710,192,530.56
  5. Step 5: Solve for x
    x = 12,710,192,530.56/146,612.90
  6. Step 6: Final answer
    x = 86,692.18

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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.