Home / 131,391.82-181,320.88-74,803.19

Finding the Fourth Proportional to 131,391.82, 181,320.88 and 74,803.19

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Solution

The fourth proportional to 131,391.82, 181,320.88 and 74,803.19 is: 103,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391.82 : 181,320.88 = 74,803.19 : x
  2. Step 2: Convert to fraction form
    131,391.82/181,320.88 = 74,803.19/x
  3. Step 3: Cross multiply
    131,391.82x = 181,320.88 × 74,803.19
  4. Step 4: Simplify right side
    131,391.82x = 13,563,380,237.61
  5. Step 5: Solve for x
    x = 13,563,380,237.61/131,391.82
  6. Step 6: Final answer
    x = 103,228.50

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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.