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Finding the Fourth Proportional to 130,488.60, 195,740.34 and 36,987

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Solution

The fourth proportional to 130,488.60, 195,740.34 and 36,987 is: 55,482.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,488.60 : 195,740.34 = 36,987 : x
  2. Step 2: Convert to fraction form
    130,488.60/195,740.34 = 36,987/x
  3. Step 3: Cross multiply
    130,488.60x = 195,740.34 × 36,987
  4. Step 4: Simplify right side
    130,488.60x = 7,239,847,955.58
  5. Step 5: Solve for x
    x = 7,239,847,955.58/130,488.60
  6. Step 6: Final answer
    x = 55,482.61

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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.