Home / 117,145.92-161,735.84-76,931.04

Finding the Fourth Proportional to 117,145.92, 161,735.84 and 76,931.04

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Solution

The fourth proportional to 117,145.92, 161,735.84 and 76,931.04 is: 106,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.92 : 161,735.84 = 76,931.04 : x
  2. Step 2: Convert to fraction form
    117,145.92/161,735.84 = 76,931.04/x
  3. Step 3: Cross multiply
    117,145.92x = 161,735.84 × 76,931.04
  4. Step 4: Simplify right side
    117,145.92x = 12,442,506,376.47
  5. Step 5: Solve for x
    x = 12,442,506,376.47/117,145.92
  6. Step 6: Final answer
    x = 106,213.74

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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.