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Finding the Fourth Proportional to 159,851.20, 220,600.00 and 87,258.40

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Solution

The fourth proportional to 159,851.20, 220,600.00 and 87,258.40 is: 120,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,851.20 : 220,600.00 = 87,258.40 : x
  2. Step 2: Convert to fraction form
    159,851.20/220,600.00 = 87,258.40/x
  3. Step 3: Cross multiply
    159,851.20x = 220,600.00 × 87,258.40
  4. Step 4: Simplify right side
    159,851.20x = 19,249,202,036.38
  5. Step 5: Solve for x
    x = 19,249,202,036.38/159,851.20
  6. Step 6: Final answer
    x = 120,419.50

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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.