Home / 100,854.59-139,198.02-58,413.13

Finding the Fourth Proportional to 100,854.59, 139,198.02 and 58,413.13

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Solution

The fourth proportional to 100,854.59, 139,198.02 and 58,413.13 is: 80,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,854.59 : 139,198.02 = 58,413.13 : x
  2. Step 2: Convert to fraction form
    100,854.59/139,198.02 = 58,413.13/x
  3. Step 3: Cross multiply
    100,854.59x = 139,198.02 × 58,413.13
  4. Step 4: Simplify right side
    100,854.59x = 8,130,992,038.00
  5. Step 5: Solve for x
    x = 8,130,992,038.00/100,854.59
  6. Step 6: Final answer
    x = 80,620.94

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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.