Home / 131,398.12-181,330.77-74,813.14

Finding the Fourth Proportional to 131,398.12, 181,330.77 and 74,813.14

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Solution

The fourth proportional to 131,398.12, 181,330.77 and 74,813.14 is: 103,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,398.12 : 181,330.77 = 74,813.14 : x
  2. Step 2: Convert to fraction form
    131,398.12/181,330.77 = 74,813.14/x
  3. Step 3: Cross multiply
    131,398.12x = 181,330.77 × 74,813.14
  4. Step 4: Simplify right side
    131,398.12x = 13,565,924,282.32
  5. Step 5: Solve for x
    x = 13,565,924,282.32/131,398.12
  6. Step 6: Final answer
    x = 103,242.91

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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.