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Finding the Fourth Proportional to 131,560, 181,552.80 and 71,944

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Solution

The fourth proportional to 131,560, 181,552.80 and 71,944 is: 99,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,560 : 181,552.80 = 71,944 : x
  2. Step 2: Convert to fraction form
    131,560/181,552.80 = 71,944/x
  3. Step 3: Cross multiply
    131,560x = 181,552.80 × 71,944
  4. Step 4: Simplify right side
    131,560x = 13,061,634,643.20
  5. Step 5: Solve for x
    x = 13,061,634,643.20/131,560
  6. Step 6: Final answer
    x = 99,282.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.