Home / 118,690.61-163,793.19-64,975.76

Finding the Fourth Proportional to 118,690.61, 163,793.19 and 64,975.76

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Solution

The fourth proportional to 118,690.61, 163,793.19 and 64,975.76 is: 89,666.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.61 : 163,793.19 = 64,975.76 : x
  2. Step 2: Convert to fraction form
    118,690.61/163,793.19 = 64,975.76/x
  3. Step 3: Cross multiply
    118,690.61x = 163,793.19 × 64,975.76
  4. Step 4: Simplify right side
    118,690.61x = 10,642,586,184.11
  5. Step 5: Solve for x
    x = 10,642,586,184.11/118,690.61
  6. Step 6: Final answer
    x = 89,666.63

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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.