Home / 100,881.74-139,183.46-65,095.53

Finding the Fourth Proportional to 100,881.74, 139,183.46 and 65,095.53

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Solution

The fourth proportional to 100,881.74, 139,183.46 and 65,095.53 is: 89,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,881.74 : 139,183.46 = 65,095.53 : x
  2. Step 2: Convert to fraction form
    100,881.74/139,183.46 = 65,095.53/x
  3. Step 3: Cross multiply
    100,881.74x = 139,183.46 × 65,095.53
  4. Step 4: Simplify right side
    100,881.74x = 9,060,220,770.46
  5. Step 5: Solve for x
    x = 9,060,220,770.46/100,881.74
  6. Step 6: Final answer
    x = 89,810.32

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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.