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Finding the Fourth Proportional to 147,189.60, 220,784.40 and 88,140.60

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Solution

The fourth proportional to 147,189.60, 220,784.40 and 88,140.60 is: 132,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,189.60 : 220,784.40 = 88,140.60 : x
  2. Step 2: Convert to fraction form
    147,189.60/220,784.40 = 88,140.60/x
  3. Step 3: Cross multiply
    147,189.60x = 220,784.40 × 88,140.60
  4. Step 4: Simplify right side
    147,189.60x = 19,460,069,486.64
  5. Step 5: Solve for x
    x = 19,460,069,486.64/147,189.60
  6. Step 6: Final answer
    x = 132,210.90

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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.