Home / 152,191.81-210,109.16-91,777.76

Finding the Fourth Proportional to 152,191.81, 210,109.16 and 91,777.76

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Solution

The fourth proportional to 152,191.81, 210,109.16 and 91,777.76 is: 126,704.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,191.81 : 210,109.16 = 91,777.76 : x
  2. Step 2: Convert to fraction form
    152,191.81/210,109.16 = 91,777.76/x
  3. Step 3: Cross multiply
    152,191.81x = 210,109.16 × 91,777.76
  4. Step 4: Simplify right side
    152,191.81x = 19,283,346,550.85
  5. Step 5: Solve for x
    x = 19,283,346,550.85/152,191.81
  6. Step 6: Final answer
    x = 126,704.24

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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.