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Finding the Fourth Proportional to 118,311.55, 163,273.80 and 64,600.65

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Solution

The fourth proportional to 118,311.55, 163,273.80 and 64,600.65 is: 89,151.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,311.55 : 163,273.80 = 64,600.65 : x
  2. Step 2: Convert to fraction form
    118,311.55/163,273.80 = 64,600.65/x
  3. Step 3: Cross multiply
    118,311.55x = 163,273.80 × 64,600.65
  4. Step 4: Simplify right side
    118,311.55x = 10,547,593,607.97
  5. Step 5: Solve for x
    x = 10,547,593,607.97/118,311.55
  6. Step 6: Final answer
    x = 89,151.01

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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.