Home / 120,600.77-180,909.79-31,853.39

Finding the Fourth Proportional to 120,600.77, 180,909.79 and 31,853.39

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Solution

The fourth proportional to 120,600.77, 180,909.79 and 31,853.39 is: 47,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,600.77 : 180,909.79 = 31,853.39 : x
  2. Step 2: Convert to fraction form
    120,600.77/180,909.79 = 31,853.39/x
  3. Step 3: Cross multiply
    120,600.77x = 180,909.79 × 31,853.39
  4. Step 4: Simplify right side
    120,600.77x = 5,762,589,111.51
  5. Step 5: Solve for x
    x = 5,762,589,111.51/120,600.77
  6. Step 6: Final answer
    x = 47,782.36

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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.