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Finding the Fourth Proportional to 103,068.60, 154,539.72 and 43,870.56

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Solution

The fourth proportional to 103,068.60, 154,539.72 and 43,870.56 is: 65,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,068.60 : 154,539.72 = 43,870.56 : x
  2. Step 2: Convert to fraction form
    103,068.60/154,539.72 = 43,870.56/x
  3. Step 3: Cross multiply
    103,068.60x = 154,539.72 × 43,870.56
  4. Step 4: Simplify right side
    103,068.60x = 6,779,744,058.64
  5. Step 5: Solve for x
    x = 6,779,744,058.64/103,068.60
  6. Step 6: Final answer
    x = 65,778.95

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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.