Home / 118,217.76-163,141.02-64,503.90

Finding the Fourth Proportional to 118,217.76, 163,141.02 and 64,503.90

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Solution

The fourth proportional to 118,217.76, 163,141.02 and 64,503.90 is: 89,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,217.76 : 163,141.02 = 64,503.90 : x
  2. Step 2: Convert to fraction form
    118,217.76/163,141.02 = 64,503.90/x
  3. Step 3: Cross multiply
    118,217.76x = 163,141.02 × 64,503.90
  4. Step 4: Simplify right side
    118,217.76x = 10,523,232,039.98
  5. Step 5: Solve for x
    x = 10,523,232,039.98/118,217.76
  6. Step 6: Final answer
    x = 89,015.66

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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.