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Finding the Fourth Proportional to 130,341.53, 179,856.44 and 72,972.88

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Solution

The fourth proportional to 130,341.53, 179,856.44 and 72,972.88 is: 100,694.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,341.53 : 179,856.44 = 72,972.88 : x
  2. Step 2: Convert to fraction form
    130,341.53/179,856.44 = 72,972.88/x
  3. Step 3: Cross multiply
    130,341.53x = 179,856.44 × 72,972.88
  4. Step 4: Simplify right side
    130,341.53x = 13,124,641,598.84
  5. Step 5: Solve for x
    x = 13,124,641,598.84/130,341.53
  6. Step 6: Final answer
    x = 100,694.24

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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.