Home / 118,711.91-163,815.93-64,986.53

Finding the Fourth Proportional to 118,711.91, 163,815.93 and 64,986.53

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Solution

The fourth proportional to 118,711.91, 163,815.93 and 64,986.53 is: 89,677.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,711.91 : 163,815.93 = 64,986.53 : x
  2. Step 2: Convert to fraction form
    118,711.91/163,815.93 = 64,986.53/x
  3. Step 3: Cross multiply
    118,711.91x = 163,815.93 × 64,986.53
  4. Step 4: Simplify right side
    118,711.91x = 10,645,828,849.42
  5. Step 5: Solve for x
    x = 10,645,828,849.42/118,711.91
  6. Step 6: Final answer
    x = 89,677.85

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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.