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Finding the Fourth Proportional to 103,347.66, 155,080.61 and 40,159.54

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Solution

The fourth proportional to 103,347.66, 155,080.61 and 40,159.54 is: 60,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,347.66 : 155,080.61 = 40,159.54 : x
  2. Step 2: Convert to fraction form
    103,347.66/155,080.61 = 40,159.54/x
  3. Step 3: Cross multiply
    103,347.66x = 155,080.61 × 40,159.54
  4. Step 4: Simplify right side
    103,347.66x = 6,227,965,673.22
  5. Step 5: Solve for x
    x = 6,227,965,673.22/103,347.66
  6. Step 6: Final answer
    x = 60,262.28

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1.5x scale

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.