Home / 155,421.09-214,481.42-91,762.98

Finding the Fourth Proportional to 155,421.09, 214,481.42 and 91,762.98

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Solution

The fourth proportional to 155,421.09, 214,481.42 and 91,762.98 is: 126,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,421.09 : 214,481.42 = 91,762.98 : x
  2. Step 2: Convert to fraction form
    155,421.09/214,481.42 = 91,762.98/x
  3. Step 3: Cross multiply
    155,421.09x = 214,481.42 × 91,762.98
  4. Step 4: Simplify right side
    155,421.09x = 19,681,454,253.83
  5. Step 5: Solve for x
    x = 19,681,454,253.83/155,421.09
  6. Step 6: Final answer
    x = 126,633.10

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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.