Home / 151,759.31-209,385.95-87,225.21

Finding the Fourth Proportional to 151,759.31, 209,385.95 and 87,225.21

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Solution

The fourth proportional to 151,759.31, 209,385.95 and 87,225.21 is: 120,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,759.31 : 209,385.95 = 87,225.21 : x
  2. Step 2: Convert to fraction form
    151,759.31/209,385.95 = 87,225.21/x
  3. Step 3: Cross multiply
    151,759.31x = 209,385.95 × 87,225.21
  4. Step 4: Simplify right side
    151,759.31x = 18,263,733,023.67
  5. Step 5: Solve for x
    x = 18,263,733,023.67/151,759.31
  6. Step 6: Final answer
    x = 120,346.71

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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.