Home / 131,391.80-181,320.88-74,803.16

Finding the Fourth Proportional to 131,391.80, 181,320.88 and 74,803.16

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Solution

The fourth proportional to 131,391.80, 181,320.88 and 74,803.16 is: 103,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391.80 : 181,320.88 = 74,803.16 : x
  2. Step 2: Convert to fraction form
    131,391.80/181,320.88 = 74,803.16/x
  3. Step 3: Cross multiply
    131,391.80x = 181,320.88 × 74,803.16
  4. Step 4: Simplify right side
    131,391.80x = 13,563,374,797.98
  5. Step 5: Solve for x
    x = 13,563,374,797.98/131,391.80
  6. Step 6: Final answer
    x = 103,228.47

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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.