Home / 131,306.05-181,140.46-77,555.26

Finding the Fourth Proportional to 131,306.05, 181,140.46 and 77,555.26

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Solution

The fourth proportional to 131,306.05, 181,140.46 and 77,555.26 is: 106,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,306.05 : 181,140.46 = 77,555.26 : x
  2. Step 2: Convert to fraction form
    131,306.05/181,140.46 = 77,555.26/x
  3. Step 3: Cross multiply
    131,306.05x = 181,140.46 × 77,555.26
  4. Step 4: Simplify right side
    131,306.05x = 14,048,395,471.82
  5. Step 5: Solve for x
    x = 14,048,395,471.82/131,306.05
  6. Step 6: Final answer
    x = 106,989.70

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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.