Home / 135,736.35-187,332.32-78,389.62

Finding the Fourth Proportional to 135,736.35, 187,332.32 and 78,389.62

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Solution

The fourth proportional to 135,736.35, 187,332.32 and 78,389.62 is: 108,187.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,736.35 : 187,332.32 = 78,389.62 : x
  2. Step 2: Convert to fraction form
    135,736.35/187,332.32 = 78,389.62/x
  3. Step 3: Cross multiply
    135,736.35x = 187,332.32 × 78,389.62
  4. Step 4: Simplify right side
    135,736.35x = 14,684,908,518.24
  5. Step 5: Solve for x
    x = 14,684,908,518.24/135,736.35
  6. Step 6: Final answer
    x = 108,187.00

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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.