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Finding the Fourth Proportional to 157,461.20, 236,120.72 and 45,115.71

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Solution

The fourth proportional to 157,461.20, 236,120.72 and 45,115.71 is: 67,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,461.20 : 236,120.72 = 45,115.71 : x
  2. Step 2: Convert to fraction form
    157,461.20/236,120.72 = 45,115.71/x
  3. Step 3: Cross multiply
    157,461.20x = 236,120.72 × 45,115.71
  4. Step 4: Simplify right side
    157,461.20x = 10,652,753,928.51
  5. Step 5: Solve for x
    x = 10,652,753,928.51/157,461.20
  6. Step 6: Final answer
    x = 67,653.20

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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.