Home / 135,068.04-186,433.38-78,501.96

Finding the Fourth Proportional to 135,068.04, 186,433.38 and 78,501.96

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Solution

The fourth proportional to 135,068.04, 186,433.38 and 78,501.96 is: 108,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,068.04 : 186,433.38 = 78,501.96 : x
  2. Step 2: Convert to fraction form
    135,068.04/186,433.38 = 78,501.96/x
  3. Step 3: Cross multiply
    135,068.04x = 186,433.38 × 78,501.96
  4. Step 4: Simplify right side
    135,068.04x = 14,635,385,739.42
  5. Step 5: Solve for x
    x = 14,635,385,739.42/135,068.04
  6. Step 6: Final answer
    x = 108,355.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.