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Finding the Fourth Proportional to 103,699.51, 155,422.90 and 53,752.08

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Solution

The fourth proportional to 103,699.51, 155,422.90 and 53,752.08 is: 80,562.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.51 : 155,422.90 = 53,752.08 : x
  2. Step 2: Convert to fraction form
    103,699.51/155,422.90 = 53,752.08/x
  3. Step 3: Cross multiply
    103,699.51x = 155,422.90 × 53,752.08
  4. Step 4: Simplify right side
    103,699.51x = 8,354,304,154.63
  5. Step 5: Solve for x
    x = 8,354,304,154.63/103,699.51
  6. Step 6: Final answer
    x = 80,562.62

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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.