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Finding the Fourth Proportional to 207,881.53, 286,876.53 and 112,388.20

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Solution

The fourth proportional to 207,881.53, 286,876.53 and 112,388.20 is: 155,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,881.53 : 286,876.53 = 112,388.20 : x
  2. Step 2: Convert to fraction form
    207,881.53/286,876.53 = 112,388.20/x
  3. Step 3: Cross multiply
    207,881.53x = 286,876.53 × 112,388.20
  4. Step 4: Simplify right side
    207,881.53x = 32,241,536,111.75
  5. Step 5: Solve for x
    x = 32,241,536,111.75/207,881.53
  6. Step 6: Final answer
    x = 155,095.72

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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.