Home / 135,688.14-187,127.12-84,705.57

Finding the Fourth Proportional to 135,688.14, 187,127.12 and 84,705.57

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Solution

The fourth proportional to 135,688.14, 187,127.12 and 84,705.57 is: 116,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,688.14 : 187,127.12 = 84,705.57 : x
  2. Step 2: Convert to fraction form
    135,688.14/187,127.12 = 84,705.57/x
  3. Step 3: Cross multiply
    135,688.14x = 187,127.12 × 84,705.57
  4. Step 4: Simplify right side
    135,688.14x = 15,850,709,573.82
  5. Step 5: Solve for x
    x = 15,850,709,573.82/135,688.14
  6. Step 6: Final answer
    x = 116,817.21

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1.5x scale

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.