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Finding the Fourth Proportional to 143,603.79, 215,413.78 and 43,767.24

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Solution

The fourth proportional to 143,603.79, 215,413.78 and 43,767.24 is: 65,653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,603.79 : 215,413.78 = 43,767.24 : x
  2. Step 2: Convert to fraction form
    143,603.79/215,413.78 = 43,767.24/x
  3. Step 3: Cross multiply
    143,603.79x = 215,413.78 × 43,767.24
  4. Step 4: Simplify right side
    143,603.79x = 9,428,065,312.66
  5. Step 5: Solve for x
    x = 9,428,065,312.66/143,603.79
  6. Step 6: Final answer
    x = 65,653.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.