Home / 134,980.20-202,470.30-90,743.40

Finding the Fourth Proportional to 134,980.20, 202,470.30 and 90,743.40

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Solution

The fourth proportional to 134,980.20, 202,470.30 and 90,743.40 is: 136,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,980.20 : 202,470.30 = 90,743.40 : x
  2. Step 2: Convert to fraction form
    134,980.20/202,470.30 = 90,743.40/x
  3. Step 3: Cross multiply
    134,980.20x = 202,470.30 × 90,743.40
  4. Step 4: Simplify right side
    134,980.20x = 18,372,843,421.02
  5. Step 5: Solve for x
    x = 18,372,843,421.02/134,980.20
  6. Step 6: Final answer
    x = 136,115.10

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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.