Home / 131,476.67-181,450.56-77,778.97

Finding the Fourth Proportional to 131,476.67, 181,450.56 and 77,778.97

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Solution

The fourth proportional to 131,476.67, 181,450.56 and 77,778.97 is: 107,342.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,476.67 : 181,450.56 = 77,778.97 : x
  2. Step 2: Convert to fraction form
    131,476.67/181,450.56 = 77,778.97/x
  3. Step 3: Cross multiply
    131,476.67x = 181,450.56 × 77,778.97
  4. Step 4: Simplify right side
    131,476.67x = 14,113,037,500.77
  5. Step 5: Solve for x
    x = 14,113,037,500.77/131,476.67
  6. Step 6: Final answer
    x = 107,342.52

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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.