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Finding the Fourth Proportional to 143,877.60, 215,524.80 and 81,475.20

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Solution

The fourth proportional to 143,877.60, 215,524.80 and 81,475.20 is: 122,047.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,877.60 : 215,524.80 = 81,475.20 : x
  2. Step 2: Convert to fraction form
    143,877.60/215,524.80 = 81,475.20/x
  3. Step 3: Cross multiply
    143,877.60x = 215,524.80 × 81,475.20
  4. Step 4: Simplify right side
    143,877.60x = 17,559,926,184.96
  5. Step 5: Solve for x
    x = 17,559,926,184.96/143,877.60
  6. Step 6: Final answer
    x = 122,047.67

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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.