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Finding the Fourth Proportional to 135,980.58, 187,647.12 and 75,555.48

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Solution

The fourth proportional to 135,980.58, 187,647.12 and 75,555.48 is: 104,263.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,980.58 : 187,647.12 = 75,555.48 : x
  2. Step 2: Convert to fraction form
    135,980.58/187,647.12 = 75,555.48/x
  3. Step 3: Cross multiply
    135,980.58x = 187,647.12 × 75,555.48
  4. Step 4: Simplify right side
    135,980.58x = 14,177,768,222.22
  5. Step 5: Solve for x
    x = 14,177,768,222.22/135,980.58
  6. Step 6: Final answer
    x = 104,263.18

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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.