Home / 120,080.48-180,120.72-31,333.76

Finding the Fourth Proportional to 120,080.48, 180,120.72 and 31,333.76

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Solution

The fourth proportional to 120,080.48, 180,120.72 and 31,333.76 is: 47,000.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,080.48 : 180,120.72 = 31,333.76 : x
  2. Step 2: Convert to fraction form
    120,080.48/180,120.72 = 31,333.76/x
  3. Step 3: Cross multiply
    120,080.48x = 180,120.72 × 31,333.76
  4. Step 4: Simplify right side
    120,080.48x = 5,643,859,411.51
  5. Step 5: Solve for x
    x = 5,643,859,411.51/120,080.48
  6. Step 6: Final answer
    x = 47,000.64

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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.