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Finding the Fourth Proportional to 130,070.88, 179,520.66 and 75,639.92

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Solution

The fourth proportional to 130,070.88, 179,520.66 and 75,639.92 is: 104,396.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,070.88 : 179,520.66 = 75,639.92 : x
  2. Step 2: Convert to fraction form
    130,070.88/179,520.66 = 75,639.92/x
  3. Step 3: Cross multiply
    130,070.88x = 179,520.66 × 75,639.92
  4. Step 4: Simplify right side
    130,070.88x = 13,578,927,463.14
  5. Step 5: Solve for x
    x = 13,578,927,463.14/130,070.88
  6. Step 6: Final answer
    x = 104,396.37

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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.