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Finding the Fourth Proportional to 515,170.68, 772,668.54 and 136,095.54

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Solution

The fourth proportional to 515,170.68, 772,668.54 and 136,095.54 is: 204,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,170.68 : 772,668.54 = 136,095.54 : x
  2. Step 2: Convert to fraction form
    515,170.68/772,668.54 = 136,095.54/x
  3. Step 3: Cross multiply
    515,170.68x = 772,668.54 × 136,095.54
  4. Step 4: Simplify right side
    515,170.68x = 105,156,742,192.31
  5. Step 5: Solve for x
    x = 105,156,742,192.31/515,170.68
  6. Step 6: Final answer
    x = 204,120.20

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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.