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Finding the Fourth Proportional to 130,372.86, 179,914.62 and 70,756.86

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Solution

The fourth proportional to 130,372.86, 179,914.62 and 70,756.86 is: 97,644.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,372.86 : 179,914.62 = 70,756.86 : x
  2. Step 2: Convert to fraction form
    130,372.86/179,914.62 = 70,756.86/x
  3. Step 3: Cross multiply
    130,372.86x = 179,914.62 × 70,756.86
  4. Step 4: Simplify right side
    130,372.86x = 12,730,193,579.29
  5. Step 5: Solve for x
    x = 12,730,193,579.29/130,372.86
  6. Step 6: Final answer
    x = 97,644.51

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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.