Home / 112,023.70-168,035.55-78,781.30

Finding the Fourth Proportional to 112,023.70, 168,035.55 and 78,781.30

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Solution

The fourth proportional to 112,023.70, 168,035.55 and 78,781.30 is: 118,171.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,023.70 : 168,035.55 = 78,781.30 : x
  2. Step 2: Convert to fraction form
    112,023.70/168,035.55 = 78,781.30/x
  3. Step 3: Cross multiply
    112,023.70x = 168,035.55 × 78,781.30
  4. Step 4: Simplify right side
    112,023.70x = 13,238,059,075.22
  5. Step 5: Solve for x
    x = 13,238,059,075.22/112,023.70
  6. Step 6: Final answer
    x = 118,171.95

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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.