Home / 135,126.78-186,479.22-74,699.34

Finding the Fourth Proportional to 135,126.78, 186,479.22 and 74,699.34

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Solution

The fourth proportional to 135,126.78, 186,479.22 and 74,699.34 is: 103,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,126.78 : 186,479.22 = 74,699.34 : x
  2. Step 2: Convert to fraction form
    135,126.78/186,479.22 = 74,699.34/x
  3. Step 3: Cross multiply
    135,126.78x = 186,479.22 × 74,699.34
  4. Step 4: Simplify right side
    135,126.78x = 13,929,874,657.71
  5. Step 5: Solve for x
    x = 13,929,874,657.71/135,126.78
  6. Step 6: Final answer
    x = 103,087.45

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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.