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Finding the Fourth Proportional to 207,909.96, 286,915.86 and 112,416.56

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Solution

The fourth proportional to 207,909.96, 286,915.86 and 112,416.56 is: 155,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,909.96 : 286,915.86 = 112,416.56 : x
  2. Step 2: Convert to fraction form
    207,909.96/286,915.86 = 112,416.56/x
  3. Step 3: Cross multiply
    207,909.96x = 286,915.86 × 112,416.56
  4. Step 4: Simplify right side
    207,909.96x = 32,254,093,990.64
  5. Step 5: Solve for x
    x = 32,254,093,990.64/207,909.96
  6. Step 6: Final answer
    x = 155,134.92

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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.