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Finding the Fourth Proportional to 135,976.40, 203,561.40 and 101,070.80

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Solution

The fourth proportional to 135,976.40, 203,561.40 and 101,070.80 is: 151,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,976.40 : 203,561.40 = 101,070.80 : x
  2. Step 2: Convert to fraction form
    135,976.40/203,561.40 = 101,070.80/x
  3. Step 3: Cross multiply
    135,976.40x = 203,561.40 × 101,070.80
  4. Step 4: Simplify right side
    135,976.40x = 20,574,113,547.12
  5. Step 5: Solve for x
    x = 20,574,113,547.12/135,976.40
  6. Step 6: Final answer
    x = 151,306.50

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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.