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Finding the Fourth Proportional to 135,987.17, 203,980.71 and 42,492.92

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Solution

The fourth proportional to 135,987.17, 203,980.71 and 42,492.92 is: 63,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,987.17 : 203,980.71 = 42,492.92 : x
  2. Step 2: Convert to fraction form
    135,987.17/203,980.71 = 42,492.92/x
  3. Step 3: Cross multiply
    135,987.17x = 203,980.71 × 42,492.92
  4. Step 4: Simplify right side
    135,987.17x = 8,667,735,328.23
  5. Step 5: Solve for x
    x = 8,667,735,328.23/135,987.17
  6. Step 6: Final answer
    x = 63,739.36

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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.