Home / 131,971.89-182,078.38-74,605.66

Finding the Fourth Proportional to 131,971.89, 182,078.38 and 74,605.66

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Solution

The fourth proportional to 131,971.89, 182,078.38 and 74,605.66 is: 102,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,971.89 : 182,078.38 = 74,605.66 : x
  2. Step 2: Convert to fraction form
    131,971.89/182,078.38 = 74,605.66/x
  3. Step 3: Cross multiply
    131,971.89x = 182,078.38 × 74,605.66
  4. Step 4: Simplify right side
    131,971.89x = 13,584,077,711.63
  5. Step 5: Solve for x
    x = 13,584,077,711.63/131,971.89
  6. Step 6: Final answer
    x = 102,931.60

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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.