Home / 118,701.38-163,807.94-64,989.80

Finding the Fourth Proportional to 118,701.38, 163,807.94 and 64,989.80

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Solution

The fourth proportional to 118,701.38, 163,807.94 and 64,989.80 is: 89,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.38 : 163,807.94 = 64,989.80 : x
  2. Step 2: Convert to fraction form
    118,701.38/163,807.94 = 64,989.80/x
  3. Step 3: Cross multiply
    118,701.38x = 163,807.94 × 64,989.80
  4. Step 4: Simplify right side
    118,701.38x = 10,645,845,259.01
  5. Step 5: Solve for x
    x = 10,645,845,259.01/118,701.38
  6. Step 6: Final answer
    x = 89,685.94

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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.