Home / 120,323.24-165,925.63-80,038.70

Finding the Fourth Proportional to 120,323.24, 165,925.63 and 80,038.70

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Solution

The fourth proportional to 120,323.24, 165,925.63 and 80,038.70 is: 110,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,323.24 : 165,925.63 = 80,038.70 : x
  2. Step 2: Convert to fraction form
    120,323.24/165,925.63 = 80,038.70/x
  3. Step 3: Cross multiply
    120,323.24x = 165,925.63 × 80,038.70
  4. Step 4: Simplify right side
    120,323.24x = 13,280,471,721.88
  5. Step 5: Solve for x
    x = 13,280,471,721.88/120,323.24
  6. Step 6: Final answer
    x = 110,373.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.