Home / 135,689.39-187,128.85-84,706.82

Finding the Fourth Proportional to 135,689.39, 187,128.85 and 84,706.82

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Solution

The fourth proportional to 135,689.39, 187,128.85 and 84,706.82 is: 116,818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,689.39 : 187,128.85 = 84,706.82 : x
  2. Step 2: Convert to fraction form
    135,689.39/187,128.85 = 84,706.82/x
  3. Step 3: Cross multiply
    135,689.39x = 187,128.85 × 84,706.82
  4. Step 4: Simplify right side
    135,689.39x = 15,851,089,813.76
  5. Step 5: Solve for x
    x = 15,851,089,813.76/135,689.39
  6. Step 6: Final answer
    x = 116,818.93

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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.