Home / 109,143.92-163,715.88-72,199.28

Finding the Fourth Proportional to 109,143.92, 163,715.88 and 72,199.28

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Solution

The fourth proportional to 109,143.92, 163,715.88 and 72,199.28 is: 108,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,143.92 : 163,715.88 = 72,199.28 : x
  2. Step 2: Convert to fraction form
    109,143.92/163,715.88 = 72,199.28/x
  3. Step 3: Cross multiply
    109,143.92x = 163,715.88 × 72,199.28
  4. Step 4: Simplify right side
    109,143.92x = 11,820,168,660.57
  5. Step 5: Solve for x
    x = 11,820,168,660.57/109,143.92
  6. Step 6: Final answer
    x = 108,298.92

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1.5x scale

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.