Home / 103,000.88-142,155.61-74,413.02

Finding the Fourth Proportional to 103,000.88, 142,155.61 and 74,413.02

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Solution

The fourth proportional to 103,000.88, 142,155.61 and 74,413.02 is: 102,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,000.88 : 142,155.61 = 74,413.02 : x
  2. Step 2: Convert to fraction form
    103,000.88/142,155.61 = 74,413.02/x
  3. Step 3: Cross multiply
    103,000.88x = 142,155.61 × 74,413.02
  4. Step 4: Simplify right side
    103,000.88x = 10,578,228,250.04
  5. Step 5: Solve for x
    x = 10,578,228,250.04/103,000.88
  6. Step 6: Final answer
    x = 102,700.37

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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.