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Finding the Fourth Proportional to 137,290.44, 205,547.40 and 87,246.48

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Solution

The fourth proportional to 137,290.44, 205,547.40 and 87,246.48 is: 130,622.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,290.44 : 205,547.40 = 87,246.48 : x
  2. Step 2: Convert to fraction form
    137,290.44/205,547.40 = 87,246.48/x
  3. Step 3: Cross multiply
    137,290.44x = 205,547.40 × 87,246.48
  4. Step 4: Simplify right side
    137,290.44x = 17,933,287,123.15
  5. Step 5: Solve for x
    x = 17,933,287,123.15/137,290.44
  6. Step 6: Final answer
    x = 130,622.99

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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.