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Finding the Fourth Proportional to 118,717.65, 163,828.17 and 65,000.07

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Solution

The fourth proportional to 118,717.65, 163,828.17 and 65,000.07 is: 89,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,717.65 : 163,828.17 = 65,000.07 : x
  2. Step 2: Convert to fraction form
    118,717.65/163,828.17 = 65,000.07/x
  3. Step 3: Cross multiply
    118,717.65x = 163,828.17 × 65,000.07
  4. Step 4: Simplify right side
    118,717.65x = 10,648,842,517.97
  5. Step 5: Solve for x
    x = 10,648,842,517.97/118,717.65
  6. Step 6: Final answer
    x = 89,698.90

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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.