Home / 131,474.18-181,447.12-77,776.46

Finding the Fourth Proportional to 131,474.18, 181,447.12 and 77,776.46

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Solution

The fourth proportional to 131,474.18, 181,447.12 and 77,776.46 is: 107,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,474.18 : 181,447.12 = 77,776.46 : x
  2. Step 2: Convert to fraction form
    131,474.18/181,447.12 = 77,776.46/x
  3. Step 3: Cross multiply
    131,474.18x = 181,447.12 × 77,776.46
  4. Step 4: Simplify right side
    131,474.18x = 14,112,314,670.80
  5. Step 5: Solve for x
    x = 14,112,314,670.80/131,474.18
  6. Step 6: Final answer
    x = 107,339.06

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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.