Home / 143,312.12-197,769.30-79,648.55

Finding the Fourth Proportional to 143,312.12, 197,769.30 and 79,648.55

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Solution

The fourth proportional to 143,312.12, 197,769.30 and 79,648.55 is: 109,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,312.12 : 197,769.30 = 79,648.55 : x
  2. Step 2: Convert to fraction form
    143,312.12/197,769.30 = 79,648.55/x
  3. Step 3: Cross multiply
    143,312.12x = 197,769.30 × 79,648.55
  4. Step 4: Simplify right side
    143,312.12x = 15,752,037,979.52
  5. Step 5: Solve for x
    x = 15,752,037,979.52/143,312.12
  6. Step 6: Final answer
    x = 109,914.21

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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.