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Finding the Fourth Proportional to 155,752.90, 214,939.08 and 84,132.92

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Solution

The fourth proportional to 155,752.90, 214,939.08 and 84,132.92 is: 116,103.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,752.90 : 214,939.08 = 84,132.92 : x
  2. Step 2: Convert to fraction form
    155,752.90/214,939.08 = 84,132.92/x
  3. Step 3: Cross multiply
    155,752.90x = 214,939.08 × 84,132.92
  4. Step 4: Simplify right side
    155,752.90x = 18,083,452,422.51
  5. Step 5: Solve for x
    x = 18,083,452,422.51/155,752.90
  6. Step 6: Final answer
    x = 116,103.47

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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.