Home / 130,101.39-179,540.21-72,742.76

Finding the Fourth Proportional to 130,101.39, 179,540.21 and 72,742.76

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Solution

The fourth proportional to 130,101.39, 179,540.21 and 72,742.76 is: 100,385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,101.39 : 179,540.21 = 72,742.76 : x
  2. Step 2: Convert to fraction form
    130,101.39/179,540.21 = 72,742.76/x
  3. Step 3: Cross multiply
    130,101.39x = 179,540.21 × 72,742.76
  4. Step 4: Simplify right side
    130,101.39x = 13,060,250,363.81
  5. Step 5: Solve for x
    x = 13,060,250,363.81/130,101.39
  6. Step 6: Final answer
    x = 100,385.17

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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.