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Finding the Fourth Proportional to 103,246.90, 154,870.35 and 40,909.30

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Solution

The fourth proportional to 103,246.90, 154,870.35 and 40,909.30 is: 61,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,246.90 : 154,870.35 = 40,909.30 : x
  2. Step 2: Convert to fraction form
    103,246.90/154,870.35 = 40,909.30/x
  3. Step 3: Cross multiply
    103,246.90x = 154,870.35 × 40,909.30
  4. Step 4: Simplify right side
    103,246.90x = 6,335,637,609.26
  5. Step 5: Solve for x
    x = 6,335,637,609.26/103,246.90
  6. Step 6: Final answer
    x = 61,363.95

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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.