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Finding the Fourth Proportional to 156,984.20, 235,130.70 and 136,248.20

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Solution

The fourth proportional to 156,984.20, 235,130.70 and 136,248.20 is: 204,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,984.20 : 235,130.70 = 136,248.20 : x
  2. Step 2: Convert to fraction form
    156,984.20/235,130.70 = 136,248.20/x
  3. Step 3: Cross multiply
    156,984.20x = 235,130.70 × 136,248.20
  4. Step 4: Simplify right side
    156,984.20x = 32,036,134,639.74
  5. Step 5: Solve for x
    x = 32,036,134,639.74/156,984.20
  6. Step 6: Final answer
    x = 204,072.35

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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.