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Finding the Fourth Proportional to 100,927.68, 139,283.52 and 55,607.52

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Solution

The fourth proportional to 100,927.68, 139,283.52 and 55,607.52 is: 76,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,927.68 : 139,283.52 = 55,607.52 : x
  2. Step 2: Convert to fraction form
    100,927.68/139,283.52 = 55,607.52/x
  3. Step 3: Cross multiply
    100,927.68x = 139,283.52 × 55,607.52
  4. Step 4: Simplify right side
    100,927.68x = 7,745,211,124.07
  5. Step 5: Solve for x
    x = 7,745,211,124.07/100,927.68
  6. Step 6: Final answer
    x = 76,740.21

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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.