Home / 131,385.38-181,312.02-74,796.75

Finding the Fourth Proportional to 131,385.38, 181,312.02 and 74,796.75

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Solution

The fourth proportional to 131,385.38, 181,312.02 and 74,796.75 is: 103,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,385.38 : 181,312.02 = 74,796.75 : x
  2. Step 2: Convert to fraction form
    131,385.38/181,312.02 = 74,796.75/x
  3. Step 3: Cross multiply
    131,385.38x = 181,312.02 × 74,796.75
  4. Step 4: Simplify right side
    131,385.38x = 13,561,549,831.94
  5. Step 5: Solve for x
    x = 13,561,549,831.94/131,385.38
  6. Step 6: Final answer
    x = 103,219.63

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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.