Home / 117,856.32-162,638.62-64,140.20

Finding the Fourth Proportional to 117,856.32, 162,638.62 and 64,140.20

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Solution

The fourth proportional to 117,856.32, 162,638.62 and 64,140.20 is: 88,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,856.32 : 162,638.62 = 64,140.20 : x
  2. Step 2: Convert to fraction form
    117,856.32/162,638.62 = 64,140.20/x
  3. Step 3: Cross multiply
    117,856.32x = 162,638.62 × 64,140.20
  4. Step 4: Simplify right side
    117,856.32x = 10,431,673,614.52
  5. Step 5: Solve for x
    x = 10,431,673,614.52/117,856.32
  6. Step 6: Final answer
    x = 88,511.79

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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.