Home / 135,071.42-186,389.28-74,641.50

Finding the Fourth Proportional to 135,071.42, 186,389.28 and 74,641.50

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Solution

The fourth proportional to 135,071.42, 186,389.28 and 74,641.50 is: 103,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,071.42 : 186,389.28 = 74,641.50 : x
  2. Step 2: Convert to fraction form
    135,071.42/186,389.28 = 74,641.50/x
  3. Step 3: Cross multiply
    135,071.42x = 186,389.28 × 74,641.50
  4. Step 4: Simplify right side
    135,071.42x = 13,912,375,443.12
  5. Step 5: Solve for x
    x = 13,912,375,443.12/135,071.42
  6. Step 6: Final answer
    x = 103,000.15

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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.