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Finding the Fourth Proportional to 107,891.80, 161,886.30 and 51,710.20

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Solution

The fourth proportional to 107,891.80, 161,886.30 and 51,710.20 is: 77,588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,891.80 : 161,886.30 = 51,710.20 : x
  2. Step 2: Convert to fraction form
    107,891.80/161,886.30 = 51,710.20/x
  3. Step 3: Cross multiply
    107,891.80x = 161,886.30 × 51,710.20
  4. Step 4: Simplify right side
    107,891.80x = 8,371,172,950.26
  5. Step 5: Solve for x
    x = 8,371,172,950.26/107,891.80
  6. Step 6: Final answer
    x = 77,588.59

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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.