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Finding the Fourth Proportional to 156,697.70, 235,046.55 and 154,364.90

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Solution

The fourth proportional to 156,697.70, 235,046.55 and 154,364.90 is: 231,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,697.70 : 235,046.55 = 154,364.90 : x
  2. Step 2: Convert to fraction form
    156,697.70/235,046.55 = 154,364.90/x
  3. Step 3: Cross multiply
    156,697.70x = 235,046.55 × 154,364.90
  4. Step 4: Simplify right side
    156,697.70x = 36,282,937,186.10
  5. Step 5: Solve for x
    x = 36,282,937,186.10/156,697.70
  6. Step 6: Final answer
    x = 231,547.35

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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.