Home / 99,106.47-136,728-56,642.22

Finding the Fourth Proportional to 99,106.47, 136,728 and 56,642.22

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Solution

The fourth proportional to 99,106.47, 136,728 and 56,642.22 is: 78,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,106.47 : 136,728 = 56,642.22 : x
  2. Step 2: Convert to fraction form
    99,106.47/136,728 = 56,642.22/x
  3. Step 3: Cross multiply
    99,106.47x = 136,728 × 56,642.22
  4. Step 4: Simplify right side
    99,106.47x = 7,744,577,456.16
  5. Step 5: Solve for x
    x = 7,744,577,456.16/99,106.47
  6. Step 6: Final answer
    x = 78,144.01

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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.