Home / 138,839.10-208,258.65-50,106.30

Finding the Fourth Proportional to 138,839.10, 208,258.65 and 50,106.30

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Solution

The fourth proportional to 138,839.10, 208,258.65 and 50,106.30 is: 75,159.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,839.10 : 208,258.65 = 50,106.30 : x
  2. Step 2: Convert to fraction form
    138,839.10/208,258.65 = 50,106.30/x
  3. Step 3: Cross multiply
    138,839.10x = 208,258.65 × 50,106.30
  4. Step 4: Simplify right side
    138,839.10x = 10,435,070,394.50
  5. Step 5: Solve for x
    x = 10,435,070,394.50/138,839.10
  6. Step 6: Final answer
    x = 75,159.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.