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Finding the Fourth Proportional to 118,700.91, 163,807.29 and 64,989.39

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Solution

The fourth proportional to 118,700.91, 163,807.29 and 64,989.39 is: 89,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,700.91 : 163,807.29 = 64,989.39 : x
  2. Step 2: Convert to fraction form
    118,700.91/163,807.29 = 64,989.39/x
  3. Step 3: Cross multiply
    118,700.91x = 163,807.29 × 64,989.39
  4. Step 4: Simplify right side
    118,700.91x = 10,645,735,854.65
  5. Step 5: Solve for x
    x = 10,645,735,854.65/118,700.91
  6. Step 6: Final answer
    x = 89,685.38

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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.