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Finding the Fourth Proportional to 159,686.60, 220,362.78 and 88,066.60

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Solution

The fourth proportional to 159,686.60, 220,362.78 and 88,066.60 is: 121,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,686.60 : 220,362.78 = 88,066.60 : x
  2. Step 2: Convert to fraction form
    159,686.60/220,362.78 = 88,066.60/x
  3. Step 3: Cross multiply
    159,686.60x = 220,362.78 × 88,066.60
  4. Step 4: Simplify right side
    159,686.60x = 19,406,600,801.15
  5. Step 5: Solve for x
    x = 19,406,600,801.15/159,686.60
  6. Step 6: Final answer
    x = 121,529.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.