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Finding the Fourth Proportional to 146,781.60, 220,129.20 and 58,005.60

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Solution

The fourth proportional to 146,781.60, 220,129.20 and 58,005.60 is: 86,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,781.60 : 220,129.20 = 58,005.60 : x
  2. Step 2: Convert to fraction form
    146,781.60/220,129.20 = 58,005.60/x
  3. Step 3: Cross multiply
    146,781.60x = 220,129.20 × 58,005.60
  4. Step 4: Simplify right side
    146,781.60x = 12,768,726,323.52
  5. Step 5: Solve for x
    x = 12,768,726,323.52/146,781.60
  6. Step 6: Final answer
    x = 86,991.33

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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.