Home / 131,780.81-181,856.73-71,350.18

Finding the Fourth Proportional to 131,780.81, 181,856.73 and 71,350.18

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Solution

The fourth proportional to 131,780.81, 181,856.73 and 71,350.18 is: 98,462.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.81 : 181,856.73 = 71,350.18 : x
  2. Step 2: Convert to fraction form
    131,780.81/181,856.73 = 71,350.18/x
  3. Step 3: Cross multiply
    131,780.81x = 181,856.73 × 71,350.18
  4. Step 4: Simplify right side
    131,780.81x = 12,975,509,965.07
  5. Step 5: Solve for x
    x = 12,975,509,965.07/131,780.81
  6. Step 6: Final answer
    x = 98,462.82

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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.