Home / 130,972.32-180,710.28-76,493.60

Finding the Fourth Proportional to 130,972.32, 180,710.28 and 76,493.60

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Solution

The fourth proportional to 130,972.32, 180,710.28 and 76,493.60 is: 105,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,972.32 : 180,710.28 = 76,493.60 : x
  2. Step 2: Convert to fraction form
    130,972.32/180,710.28 = 76,493.60/x
  3. Step 3: Cross multiply
    130,972.32x = 180,710.28 × 76,493.60
  4. Step 4: Simplify right side
    130,972.32x = 13,823,179,874.21
  5. Step 5: Solve for x
    x = 13,823,179,874.21/130,972.32
  6. Step 6: Final answer
    x = 105,542.76

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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.