Home / 118,406.11-163,398.36-64,689.76

Finding the Fourth Proportional to 118,406.11, 163,398.36 and 64,689.76

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Solution

The fourth proportional to 118,406.11, 163,398.36 and 64,689.76 is: 89,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,406.11 : 163,398.36 = 64,689.76 : x
  2. Step 2: Convert to fraction form
    118,406.11/163,398.36 = 64,689.76/x
  3. Step 3: Cross multiply
    118,406.11x = 163,398.36 × 64,689.76
  4. Step 4: Simplify right side
    118,406.11x = 10,570,200,692.79
  5. Step 5: Solve for x
    x = 10,570,200,692.79/118,406.11
  6. Step 6: Final answer
    x = 89,270.74

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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.