Home / 109,315.53-163,718.15-84,155.92

Finding the Fourth Proportional to 109,315.53, 163,718.15 and 84,155.92

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Solution

The fourth proportional to 109,315.53, 163,718.15 and 84,155.92 is: 126,037.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,315.53 : 163,718.15 = 84,155.92 : x
  2. Step 2: Convert to fraction form
    109,315.53/163,718.15 = 84,155.92/x
  3. Step 3: Cross multiply
    109,315.53x = 163,718.15 × 84,155.92
  4. Step 4: Simplify right side
    109,315.53x = 13,777,850,703.87
  5. Step 5: Solve for x
    x = 13,777,850,703.87/109,315.53
  6. Step 6: Final answer
    x = 126,037.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.