Home / 131,648.16-181,671.12-77,934

Finding the Fourth Proportional to 131,648.16, 181,671.12 and 77,934

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Solution

The fourth proportional to 131,648.16, 181,671.12 and 77,934 is: 107,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,648.16 : 181,671.12 = 77,934 : x
  2. Step 2: Convert to fraction form
    131,648.16/181,671.12 = 77,934/x
  3. Step 3: Cross multiply
    131,648.16x = 181,671.12 × 77,934
  4. Step 4: Simplify right side
    131,648.16x = 14,158,357,066.08
  5. Step 5: Solve for x
    x = 14,158,357,066.08/131,648.16
  6. Step 6: Final answer
    x = 107,546.94

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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.