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Finding the Fourth Proportional to 99,018.93, 136,610.29 and 65,045.70

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Solution

The fourth proportional to 99,018.93, 136,610.29 and 65,045.70 is: 89,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,018.93 : 136,610.29 = 65,045.70 : x
  2. Step 2: Convert to fraction form
    99,018.93/136,610.29 = 65,045.70/x
  3. Step 3: Cross multiply
    99,018.93x = 136,610.29 × 65,045.70
  4. Step 4: Simplify right side
    99,018.93x = 8,885,911,940.25
  5. Step 5: Solve for x
    x = 8,885,911,940.25/99,018.93
  6. Step 6: Final answer
    x = 89,739.53

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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.