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Finding the Fourth Proportional to 147,376.80, 221,081.40 and 53,902.80

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Solution

The fourth proportional to 147,376.80, 221,081.40 and 53,902.80 is: 80,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,376.80 : 221,081.40 = 53,902.80 : x
  2. Step 2: Convert to fraction form
    147,376.80/221,081.40 = 53,902.80/x
  3. Step 3: Cross multiply
    147,376.80x = 221,081.40 × 53,902.80
  4. Step 4: Simplify right side
    147,376.80x = 11,916,906,487.92
  5. Step 5: Solve for x
    x = 11,916,906,487.92/147,376.80
  6. Step 6: Final answer
    x = 80,860.13

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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.