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Finding the Fourth Proportional to 159,689.20, 239,533.80 and 106,812.40

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Solution

The fourth proportional to 159,689.20, 239,533.80 and 106,812.40 is: 160,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,689.20 : 239,533.80 = 106,812.40 : x
  2. Step 2: Convert to fraction form
    159,689.20/239,533.80 = 106,812.40/x
  3. Step 3: Cross multiply
    159,689.20x = 239,533.80 × 106,812.40
  4. Step 4: Simplify right side
    159,689.20x = 25,585,180,059.12
  5. Step 5: Solve for x
    x = 25,585,180,059.12/159,689.20
  6. Step 6: Final answer
    x = 160,218.60

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1.5x scale

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.