Home / 131,799.06-181,875.51-78,089.04

Finding the Fourth Proportional to 131,799.06, 181,875.51 and 78,089.04

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Solution

The fourth proportional to 131,799.06, 181,875.51 and 78,089.04 is: 107,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,799.06 : 181,875.51 = 78,089.04 : x
  2. Step 2: Convert to fraction form
    131,799.06/181,875.51 = 78,089.04/x
  3. Step 3: Cross multiply
    131,799.06x = 181,875.51 × 78,089.04
  4. Step 4: Simplify right side
    131,799.06x = 14,202,483,975.41
  5. Step 5: Solve for x
    x = 14,202,483,975.41/131,799.06
  6. Step 6: Final answer
    x = 107,758.61

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1.5x scale

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.