Home / 99,219.16-136,920.24-53,896.72

Finding the Fourth Proportional to 99,219.16, 136,920.24 and 53,896.72

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Solution

The fourth proportional to 99,219.16, 136,920.24 and 53,896.72 is: 74,376.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,219.16 : 136,920.24 = 53,896.72 : x
  2. Step 2: Convert to fraction form
    99,219.16/136,920.24 = 53,896.72/x
  3. Step 3: Cross multiply
    99,219.16x = 136,920.24 × 53,896.72
  4. Step 4: Simplify right side
    99,219.16x = 7,379,551,837.61
  5. Step 5: Solve for x
    x = 7,379,551,837.61/99,219.16
  6. Step 6: Final answer
    x = 74,376.28

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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.