Home / 135,176.23-186,468.38-78,581.35

Finding the Fourth Proportional to 135,176.23, 186,468.38 and 78,581.35

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Solution

The fourth proportional to 135,176.23, 186,468.38 and 78,581.35 is: 108,398.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,176.23 : 186,468.38 = 78,581.35 : x
  2. Step 2: Convert to fraction form
    135,176.23/186,468.38 = 78,581.35/x
  3. Step 3: Cross multiply
    135,176.23x = 186,468.38 × 78,581.35
  4. Step 4: Simplify right side
    135,176.23x = 14,652,936,639.81
  5. Step 5: Solve for x
    x = 14,652,936,639.81/135,176.23
  6. Step 6: Final answer
    x = 108,398.77

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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.