Home / 143,038.64-197,387.34-79,372.64

Finding the Fourth Proportional to 143,038.64, 197,387.34 and 79,372.64

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Solution

The fourth proportional to 143,038.64, 197,387.34 and 79,372.64 is: 109,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.64 : 197,387.34 = 79,372.64 : x
  2. Step 2: Convert to fraction form
    143,038.64/197,387.34 = 79,372.64/x
  3. Step 3: Cross multiply
    143,038.64x = 197,387.34 × 79,372.64
  4. Step 4: Simplify right side
    143,038.64x = 15,667,154,278.38
  5. Step 5: Solve for x
    x = 15,667,154,278.38/143,038.64
  6. Step 6: Final answer
    x = 109,530.92

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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.