Home / 100,841.40-139,155.86-55,510.53

Finding the Fourth Proportional to 100,841.40, 139,155.86 and 55,510.53

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Solution

The fourth proportional to 100,841.40, 139,155.86 and 55,510.53 is: 76,601.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,841.40 : 139,155.86 = 55,510.53 : x
  2. Step 2: Convert to fraction form
    100,841.40/139,155.86 = 55,510.53/x
  3. Step 3: Cross multiply
    100,841.40x = 139,155.86 × 55,510.53
  4. Step 4: Simplify right side
    100,841.40x = 7,724,615,263.65
  5. Step 5: Solve for x
    x = 7,724,615,263.65/100,841.40
  6. Step 6: Final answer
    x = 76,601.63

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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.