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Finding the Fourth Proportional to 130,376.86, 179,920.14 and 70,760.86

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Solution

The fourth proportional to 130,376.86, 179,920.14 and 70,760.86 is: 97,650.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,376.86 : 179,920.14 = 70,760.86 : x
  2. Step 2: Convert to fraction form
    130,376.86/179,920.14 = 70,760.86/x
  3. Step 3: Cross multiply
    130,376.86x = 179,920.14 × 70,760.86
  4. Step 4: Simplify right side
    130,376.86x = 12,731,303,837.72
  5. Step 5: Solve for x
    x = 12,731,303,837.72/130,376.86
  6. Step 6: Final answer
    x = 97,650.03

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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.