Home / 131,040-180,839.04-74,453.76

Finding the Fourth Proportional to 131,040, 180,839.04 and 74,453.76

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Solution

The fourth proportional to 131,040, 180,839.04 and 74,453.76 is: 102,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,040 : 180,839.04 = 74,453.76 : x
  2. Step 2: Convert to fraction form
    131,040/180,839.04 = 74,453.76/x
  3. Step 3: Cross multiply
    131,040x = 180,839.04 × 74,453.76
  4. Step 4: Simplify right side
    131,040x = 13,464,146,482.79
  5. Step 5: Solve for x
    x = 13,464,146,482.79/131,040
  6. Step 6: Final answer
    x = 102,748.37

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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.