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Finding the Fourth Proportional to 159,470.10, 239,205.15 and 115,511.40

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Solution

The fourth proportional to 159,470.10, 239,205.15 and 115,511.40 is: 173,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,470.10 : 239,205.15 = 115,511.40 : x
  2. Step 2: Convert to fraction form
    159,470.10/239,205.15 = 115,511.40/x
  3. Step 3: Cross multiply
    159,470.10x = 239,205.15 × 115,511.40
  4. Step 4: Simplify right side
    159,470.10x = 27,630,921,763.71
  5. Step 5: Solve for x
    x = 27,630,921,763.71/159,470.10
  6. Step 6: Final answer
    x = 173,267.10

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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.