Home / 105,610.76-145,720.16-62,603.80

Finding the Fourth Proportional to 105,610.76, 145,720.16 and 62,603.80

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Solution

The fourth proportional to 105,610.76, 145,720.16 and 62,603.80 is: 86,379.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,610.76 : 145,720.16 = 62,603.80 : x
  2. Step 2: Convert to fraction form
    105,610.76/145,720.16 = 62,603.80/x
  3. Step 3: Cross multiply
    105,610.76x = 145,720.16 × 62,603.80
  4. Step 4: Simplify right side
    105,610.76x = 9,122,635,752.61
  5. Step 5: Solve for x
    x = 9,122,635,752.61/105,610.76
  6. Step 6: Final answer
    x = 86,379.79

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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.