Home / 101,565.18-140,136.75-65,285.58

Finding the Fourth Proportional to 101,565.18, 140,136.75 and 65,285.58

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Solution

The fourth proportional to 101,565.18, 140,136.75 and 65,285.58 is: 90,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,565.18 : 140,136.75 = 65,285.58 : x
  2. Step 2: Convert to fraction form
    101,565.18/140,136.75 = 65,285.58/x
  3. Step 3: Cross multiply
    101,565.18x = 140,136.75 × 65,285.58
  4. Step 4: Simplify right side
    101,565.18x = 9,148,909,003.07
  5. Step 5: Solve for x
    x = 9,148,909,003.07/101,565.18
  6. Step 6: Final answer
    x = 90,079.19

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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.