Home / 138,901.80-208,352.70-50,158.20

Finding the Fourth Proportional to 138,901.80, 208,352.70 and 50,158.20

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Solution

The fourth proportional to 138,901.80, 208,352.70 and 50,158.20 is: 75,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,901.80 : 208,352.70 = 50,158.20 : x
  2. Step 2: Convert to fraction form
    138,901.80/208,352.70 = 50,158.20/x
  3. Step 3: Cross multiply
    138,901.80x = 208,352.70 × 50,158.20
  4. Step 4: Simplify right side
    138,901.80x = 10,450,596,397.14
  5. Step 5: Solve for x
    x = 10,450,596,397.14/138,901.80
  6. Step 6: Final answer
    x = 75,237.30

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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.