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Finding the Fourth Proportional to 126,751.88, 190,314.72 and 70,701.50

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Solution

The fourth proportional to 126,751.88, 190,314.72 and 70,701.50 is: 106,156.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,751.88 : 190,314.72 = 70,701.50 : x
  2. Step 2: Convert to fraction form
    126,751.88/190,314.72 = 70,701.50/x
  3. Step 3: Cross multiply
    126,751.88x = 190,314.72 × 70,701.50
  4. Step 4: Simplify right side
    126,751.88x = 13,455,536,176.08
  5. Step 5: Solve for x
    x = 13,455,536,176.08/126,751.88
  6. Step 6: Final answer
    x = 106,156.50

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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.