Home / 91,421.97-126,189.14-53,190.51

Finding the Fourth Proportional to 91,421.97, 126,189.14 and 53,190.51

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Solution

The fourth proportional to 91,421.97, 126,189.14 and 53,190.51 is: 73,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,421.97 : 126,189.14 = 53,190.51 : x
  2. Step 2: Convert to fraction form
    91,421.97/126,189.14 = 53,190.51/x
  3. Step 3: Cross multiply
    91,421.97x = 126,189.14 × 53,190.51
  4. Step 4: Simplify right side
    91,421.97x = 6,712,064,447.11
  5. Step 5: Solve for x
    x = 6,712,064,447.11/91,421.97
  6. Step 6: Final answer
    x = 73,418.51

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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.