Home / 132,670.76-183,061.33-78,240.00

Finding the Fourth Proportional to 132,670.76, 183,061.33 and 78,240.00

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Solution

The fourth proportional to 132,670.76, 183,061.33 and 78,240.00 is: 107,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,670.76 : 183,061.33 = 78,240.00 : x
  2. Step 2: Convert to fraction form
    132,670.76/183,061.33 = 78,240.00/x
  3. Step 3: Cross multiply
    132,670.76x = 183,061.33 × 78,240.00
  4. Step 4: Simplify right side
    132,670.76x = 14,322,718,950.08
  5. Step 5: Solve for x
    x = 14,322,718,950.08/132,670.76
  6. Step 6: Final answer
    x = 107,956.87

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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.