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Finding the Fourth Proportional to 130,459.86, 195,765.03 and 70,488.49

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Solution

The fourth proportional to 130,459.86, 195,765.03 and 70,488.49 is: 105,773.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,459.86 : 195,765.03 = 70,488.49 : x
  2. Step 2: Convert to fraction form
    130,459.86/195,765.03 = 70,488.49/x
  3. Step 3: Cross multiply
    130,459.86x = 195,765.03 × 70,488.49
  4. Step 4: Simplify right side
    130,459.86x = 13,799,181,359.50
  5. Step 5: Solve for x
    x = 13,799,181,359.50/130,459.86
  6. Step 6: Final answer
    x = 105,773.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.