Home / 118,713.91-163,818.69-64,988.53

Finding the Fourth Proportional to 118,713.91, 163,818.69 and 64,988.53

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Solution

The fourth proportional to 118,713.91, 163,818.69 and 64,988.53 is: 89,680.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.91 : 163,818.69 = 64,988.53 : x
  2. Step 2: Convert to fraction form
    118,713.91/163,818.69 = 64,988.53/x
  3. Step 3: Cross multiply
    118,713.91x = 163,818.69 × 64,988.53
  4. Step 4: Simplify right side
    118,713.91x = 10,646,335,849.63
  5. Step 5: Solve for x
    x = 10,646,335,849.63/118,713.91
  6. Step 6: Final answer
    x = 89,680.61

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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.