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Finding the Fourth Proportional to 201,667.10, 302,719.35 and 126,871.70

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Solution

The fourth proportional to 201,667.10, 302,719.35 and 126,871.70 is: 190,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,667.10 : 302,719.35 = 126,871.70 : x
  2. Step 2: Convert to fraction form
    201,667.10/302,719.35 = 126,871.70/x
  3. Step 3: Cross multiply
    201,667.10x = 302,719.35 × 126,871.70
  4. Step 4: Simplify right side
    201,667.10x = 38,406,518,557.40
  5. Step 5: Solve for x
    x = 38,406,518,557.40/201,667.10
  6. Step 6: Final answer
    x = 190,445.14

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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.