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Finding the Fourth Proportional to 100,671.04, 138,868.64 and 62,413.12

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Solution

The fourth proportional to 100,671.04, 138,868.64 and 62,413.12 is: 86,094.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,671.04 : 138,868.64 = 62,413.12 : x
  2. Step 2: Convert to fraction form
    100,671.04/138,868.64 = 62,413.12/x
  3. Step 3: Cross multiply
    100,671.04x = 138,868.64 × 62,413.12
  4. Step 4: Simplify right side
    100,671.04x = 8,667,225,092.56
  5. Step 5: Solve for x
    x = 8,667,225,092.56/100,671.04
  6. Step 6: Final answer
    x = 86,094.52

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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.