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Finding the Fourth Proportional to 120,907.80, 181,424.70 and 57,799.08

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Solution

The fourth proportional to 120,907.80, 181,424.70 and 57,799.08 is: 86,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,907.80 : 181,424.70 = 57,799.08 : x
  2. Step 2: Convert to fraction form
    120,907.80/181,424.70 = 57,799.08/x
  3. Step 3: Cross multiply
    120,907.80x = 181,424.70 × 57,799.08
  4. Step 4: Simplify right side
    120,907.80x = 10,486,180,749.28
  5. Step 5: Solve for x
    x = 10,486,180,749.28/120,907.80
  6. Step 6: Final answer
    x = 86,728.74

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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.