Home / 118,700.12-163,806.20-64,988.55

Finding the Fourth Proportional to 118,700.12, 163,806.20 and 64,988.55

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Solution

The fourth proportional to 118,700.12, 163,806.20 and 64,988.55 is: 89,684.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,700.12 : 163,806.20 = 64,988.55 : x
  2. Step 2: Convert to fraction form
    118,700.12/163,806.20 = 64,988.55/x
  3. Step 3: Cross multiply
    118,700.12x = 163,806.20 × 64,988.55
  4. Step 4: Simplify right side
    118,700.12x = 10,645,527,419.01
  5. Step 5: Solve for x
    x = 10,645,527,419.01/118,700.12
  6. Step 6: Final answer
    x = 89,684.22

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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.