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Finding the Fourth Proportional to 140,870.88, 211,306.32 and 47,376.72

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Solution

The fourth proportional to 140,870.88, 211,306.32 and 47,376.72 is: 71,065.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,870.88 : 211,306.32 = 47,376.72 : x
  2. Step 2: Convert to fraction form
    140,870.88/211,306.32 = 47,376.72/x
  3. Step 3: Cross multiply
    140,870.88x = 211,306.32 × 47,376.72
  4. Step 4: Simplify right side
    140,870.88x = 10,011,000,356.87
  5. Step 5: Solve for x
    x = 10,011,000,356.87/140,870.88
  6. Step 6: Final answer
    x = 71,065.08

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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.