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Finding the Fourth Proportional to 120,870.78, 181,291.77 and 32,130.78

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Solution

The fourth proportional to 120,870.78, 181,291.77 and 32,130.78 is: 48,192.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,870.78 : 181,291.77 = 32,130.78 : x
  2. Step 2: Convert to fraction form
    120,870.78/181,291.77 = 32,130.78/x
  3. Step 3: Cross multiply
    120,870.78x = 181,291.77 × 32,130.78
  4. Step 4: Simplify right side
    120,870.78x = 5,825,045,977.68
  5. Step 5: Solve for x
    x = 5,825,045,977.68/120,870.78
  6. Step 6: Final answer
    x = 48,192.34

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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.