Home / 99,122.72-136,791.40-56,102.22

Finding the Fourth Proportional to 99,122.72, 136,791.40 and 56,102.22

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Solution

The fourth proportional to 99,122.72, 136,791.40 and 56,102.22 is: 77,422.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,122.72 : 136,791.40 = 56,102.22 : x
  2. Step 2: Convert to fraction form
    99,122.72/136,791.40 = 56,102.22/x
  3. Step 3: Cross multiply
    99,122.72x = 136,791.40 × 56,102.22
  4. Step 4: Simplify right side
    99,122.72x = 7,674,301,216.91
  5. Step 5: Solve for x
    x = 7,674,301,216.91/99,122.72
  6. Step 6: Final answer
    x = 77,422.22

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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.