Home / 143,429.20-197,937.08-78,901.12

Finding the Fourth Proportional to 143,429.20, 197,937.08 and 78,901.12

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Solution

The fourth proportional to 143,429.20, 197,937.08 and 78,901.12 is: 108,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,429.20 : 197,937.08 = 78,901.12 : x
  2. Step 2: Convert to fraction form
    143,429.20/197,937.08 = 78,901.12/x
  3. Step 3: Cross multiply
    143,429.20x = 197,937.08 × 78,901.12
  4. Step 4: Simplify right side
    143,429.20x = 15,617,457,301.53
  5. Step 5: Solve for x
    x = 15,617,457,301.53/143,429.20
  6. Step 6: Final answer
    x = 108,886.18

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1.5x scale

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.