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Finding the Fourth Proportional to 130,156.50, 179,615.97 and 70,540.50

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Solution

The fourth proportional to 130,156.50, 179,615.97 and 70,540.50 is: 97,345.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,156.50 : 179,615.97 = 70,540.50 : x
  2. Step 2: Convert to fraction form
    130,156.50/179,615.97 = 70,540.50/x
  3. Step 3: Cross multiply
    130,156.50x = 179,615.97 × 70,540.50
  4. Step 4: Simplify right side
    130,156.50x = 12,670,200,331.79
  5. Step 5: Solve for x
    x = 12,670,200,331.79/130,156.50
  6. Step 6: Final answer
    x = 97,345.89

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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.