Home / 98,721.16-136,234.67-53,399.00

Finding the Fourth Proportional to 98,721.16, 136,234.67 and 53,399.00

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Solution

The fourth proportional to 98,721.16, 136,234.67 and 53,399.00 is: 73,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,721.16 : 136,234.67 = 53,399.00 : x
  2. Step 2: Convert to fraction form
    98,721.16/136,234.67 = 53,399.00/x
  3. Step 3: Cross multiply
    98,721.16x = 136,234.67 × 53,399.00
  4. Step 4: Simplify right side
    98,721.16x = 7,274,795,216.92
  5. Step 5: Solve for x
    x = 7,274,795,216.92/98,721.16
  6. Step 6: Final answer
    x = 73,690.34

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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.