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Finding the Fourth Proportional to 101,186.89, 151,612.86 and 90,756.32

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Solution

The fourth proportional to 101,186.89, 151,612.86 and 90,756.32 is: 135,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,186.89 : 151,612.86 = 90,756.32 : x
  2. Step 2: Convert to fraction form
    101,186.89/151,612.86 = 90,756.32/x
  3. Step 3: Cross multiply
    101,186.89x = 151,612.86 × 90,756.32
  4. Step 4: Simplify right side
    101,186.89x = 13,759,824,820.55
  5. Step 5: Solve for x
    x = 13,759,824,820.55/101,186.89
  6. Step 6: Final answer
    x = 135,984.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.