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Finding the Fourth Proportional to 243,106.90, 335,504.36 and 135,697.86

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Solution

The fourth proportional to 243,106.90, 335,504.36 and 135,697.86 is: 187,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,106.90 : 335,504.36 = 135,697.86 : x
  2. Step 2: Convert to fraction form
    243,106.90/335,504.36 = 135,697.86/x
  3. Step 3: Cross multiply
    243,106.90x = 335,504.36 × 135,697.86
  4. Step 4: Simplify right side
    243,106.90x = 45,527,223,672.67
  5. Step 5: Solve for x
    x = 45,527,223,672.67/243,106.90
  6. Step 6: Final answer
    x = 187,272.45

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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.