Home / 135,983.40-187,653.18-77,841.60

Finding the Fourth Proportional to 135,983.40, 187,653.18 and 77,841.60

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Solution

The fourth proportional to 135,983.40, 187,653.18 and 77,841.60 is: 107,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,983.40 : 187,653.18 = 77,841.60 : x
  2. Step 2: Convert to fraction form
    135,983.40/187,653.18 = 77,841.60/x
  3. Step 3: Cross multiply
    135,983.40x = 187,653.18 × 77,841.60
  4. Step 4: Simplify right side
    135,983.40x = 14,607,223,776.29
  5. Step 5: Solve for x
    x = 14,607,223,776.29/135,983.40
  6. Step 6: Final answer
    x = 107,419.17

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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.