Home / 151,750.45-209,422.63-87,240.63

Finding the Fourth Proportional to 151,750.45, 209,422.63 and 87,240.63

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Solution

The fourth proportional to 151,750.45, 209,422.63 and 87,240.63 is: 120,396.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,750.45 : 209,422.63 = 87,240.63 : x
  2. Step 2: Convert to fraction form
    151,750.45/209,422.63 = 87,240.63/x
  3. Step 3: Cross multiply
    151,750.45x = 209,422.63 × 87,240.63
  4. Step 4: Simplify right side
    151,750.45x = 18,270,162,177.46
  5. Step 5: Solve for x
    x = 18,270,162,177.46/151,750.45
  6. Step 6: Final answer
    x = 120,396.10

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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.