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Finding the Fourth Proportional to 207,898.96, 286,900.88 and 112,405.72

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Solution

The fourth proportional to 207,898.96, 286,900.88 and 112,405.72 is: 155,120.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,898.96 : 286,900.88 = 112,405.72 : x
  2. Step 2: Convert to fraction form
    207,898.96/286,900.88 = 112,405.72/x
  3. Step 3: Cross multiply
    207,898.96x = 286,900.88 × 112,405.72
  4. Step 4: Simplify right side
    207,898.96x = 32,249,299,985.03
  5. Step 5: Solve for x
    x = 32,249,299,985.03/207,898.96
  6. Step 6: Final answer
    x = 155,120.06

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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.