Home / 131,645.42-181,670.12-71,215.91

Finding the Fourth Proportional to 131,645.42, 181,670.12 and 71,215.91

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Solution

The fourth proportional to 131,645.42, 181,670.12 and 71,215.91 is: 98,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,645.42 : 181,670.12 = 71,215.91 : x
  2. Step 2: Convert to fraction form
    131,645.42/181,670.12 = 71,215.91/x
  3. Step 3: Cross multiply
    131,645.42x = 181,670.12 × 71,215.91
  4. Step 4: Simplify right side
    131,645.42x = 12,937,802,915.61
  5. Step 5: Solve for x
    x = 12,937,802,915.61/131,645.42
  6. Step 6: Final answer
    x = 98,277.66

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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.