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Finding the Fourth Proportional to 143,652.93, 215,407.29 and 83,700.78

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Solution

The fourth proportional to 143,652.93, 215,407.29 and 83,700.78 is: 125,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,652.93 : 215,407.29 = 83,700.78 : x
  2. Step 2: Convert to fraction form
    143,652.93/215,407.29 = 83,700.78/x
  3. Step 3: Cross multiply
    143,652.93x = 215,407.29 × 83,700.78
  4. Step 4: Simplify right side
    143,652.93x = 18,029,758,190.69
  5. Step 5: Solve for x
    x = 18,029,758,190.69/143,652.93
  6. Step 6: Final answer
    x = 125,509.16

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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.