Home / 138,265.44-190,820.64-84,586.20

Finding the Fourth Proportional to 138,265.44, 190,820.64 and 84,586.20

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Solution

The fourth proportional to 138,265.44, 190,820.64 and 84,586.20 is: 116,737.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,265.44 : 190,820.64 = 84,586.20 : x
  2. Step 2: Convert to fraction form
    138,265.44/190,820.64 = 84,586.20/x
  3. Step 3: Cross multiply
    138,265.44x = 190,820.64 × 84,586.20
  4. Step 4: Simplify right side
    138,265.44x = 16,140,792,819.17
  5. Step 5: Solve for x
    x = 16,140,792,819.17/138,265.44
  6. Step 6: Final answer
    x = 116,737.72

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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.