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Finding the Fourth Proportional to 147,054.40, 220,144.20 and 87,859.60

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Solution

The fourth proportional to 147,054.40, 220,144.20 and 87,859.60 is: 131,528.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,054.40 : 220,144.20 = 87,859.60 : x
  2. Step 2: Convert to fraction form
    147,054.40/220,144.20 = 87,859.60/x
  3. Step 3: Cross multiply
    147,054.40x = 220,144.20 × 87,859.60
  4. Step 4: Simplify right side
    147,054.40x = 19,341,781,354.32
  5. Step 5: Solve for x
    x = 19,341,781,354.32/147,054.40
  6. Step 6: Final answer
    x = 131,528.07

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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.