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Finding the Fourth Proportional to 159,459.20, 220,055.16 and 87,841.76

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Solution

The fourth proportional to 159,459.20, 220,055.16 and 87,841.76 is: 121,222.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,459.20 : 220,055.16 = 87,841.76 : x
  2. Step 2: Convert to fraction form
    159,459.20/220,055.16 = 87,841.76/x
  3. Step 3: Cross multiply
    159,459.20x = 220,055.16 × 87,841.76
  4. Step 4: Simplify right side
    159,459.20x = 19,330,032,551.48
  5. Step 5: Solve for x
    x = 19,330,032,551.48/159,459.20
  6. Step 6: Final answer
    x = 121,222.44

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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.