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Finding the Fourth Proportional to 146,713.80, 220,143.60 and 57,970.20

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Solution

The fourth proportional to 146,713.80, 220,143.60 and 57,970.20 is: 86,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,713.80 : 220,143.60 = 57,970.20 : x
  2. Step 2: Convert to fraction form
    146,713.80/220,143.60 = 57,970.20/x
  3. Step 3: Cross multiply
    146,713.80x = 220,143.60 × 57,970.20
  4. Step 4: Simplify right side
    146,713.80x = 12,761,768,520.72
  5. Step 5: Solve for x
    x = 12,761,768,520.72/146,713.80
  6. Step 6: Final answer
    x = 86,984.10

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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.