Home / 135,534.86-187,039.20-75,106.50

Finding the Fourth Proportional to 135,534.86, 187,039.20 and 75,106.50

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Solution

The fourth proportional to 135,534.86, 187,039.20 and 75,106.50 is: 103,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,534.86 : 187,039.20 = 75,106.50 : x
  2. Step 2: Convert to fraction form
    135,534.86/187,039.20 = 75,106.50/x
  3. Step 3: Cross multiply
    135,534.86x = 187,039.20 × 75,106.50
  4. Step 4: Simplify right side
    135,534.86x = 14,047,859,674.80
  5. Step 5: Solve for x
    x = 14,047,859,674.80/135,534.86
  6. Step 6: Final answer
    x = 103,647.58

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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.