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Finding the Fourth Proportional to 201,699.92, 302,711.16 and 90,900.56

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Solution

The fourth proportional to 201,699.92, 302,711.16 and 90,900.56 is: 136,423.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,699.92 : 302,711.16 = 90,900.56 : x
  2. Step 2: Convert to fraction form
    201,699.92/302,711.16 = 90,900.56/x
  3. Step 3: Cross multiply
    201,699.92x = 302,711.16 × 90,900.56
  4. Step 4: Simplify right side
    201,699.92x = 27,516,613,962.25
  5. Step 5: Solve for x
    x = 27,516,613,962.25/201,699.92
  6. Step 6: Final answer
    x = 136,423.52

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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.