Home / 135,688.89-187,128.16-84,706.32

Finding the Fourth Proportional to 135,688.89, 187,128.16 and 84,706.32

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Solution

The fourth proportional to 135,688.89, 187,128.16 and 84,706.32 is: 116,818.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,688.89 : 187,128.16 = 84,706.32 : x
  2. Step 2: Convert to fraction form
    135,688.89/187,128.16 = 84,706.32/x
  3. Step 3: Cross multiply
    135,688.89x = 187,128.16 × 84,706.32
  4. Step 4: Simplify right side
    135,688.89x = 15,850,937,590.21
  5. Step 5: Solve for x
    x = 15,850,937,590.21/135,688.89
  6. Step 6: Final answer
    x = 116,818.24

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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.