Home / 91,203.16-136,144.82-78,802.96

Finding the Fourth Proportional to 91,203.16, 136,144.82 and 78,802.96

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Solution

The fourth proportional to 91,203.16, 136,144.82 and 78,802.96 is: 117,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,203.16 : 136,144.82 = 78,802.96 : x
  2. Step 2: Convert to fraction form
    91,203.16/136,144.82 = 78,802.96/x
  3. Step 3: Cross multiply
    91,203.16x = 136,144.82 × 78,802.96
  4. Step 4: Simplify right side
    91,203.16x = 10,728,614,804.67
  5. Step 5: Solve for x
    x = 10,728,614,804.67/91,203.16
  6. Step 6: Final answer
    x = 117,634.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.