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Finding the Fourth Proportional to 207,870.71, 286,861.50 and 112,377.38

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Solution

The fourth proportional to 207,870.71, 286,861.50 and 112,377.38 is: 155,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,870.71 : 286,861.50 = 112,377.38 : x
  2. Step 2: Convert to fraction form
    207,870.71/286,861.50 = 112,377.38/x
  3. Step 3: Cross multiply
    207,870.71x = 286,861.50 × 112,377.38
  4. Step 4: Simplify right side
    207,870.71x = 32,236,742,358.56
  5. Step 5: Solve for x
    x = 32,236,742,358.56/207,870.71
  6. Step 6: Final answer
    x = 155,080.74

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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.