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Finding the Fourth Proportional to 104,160, 143,741.36 and 56,413.48

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Solution

The fourth proportional to 104,160, 143,741.36 and 56,413.48 is: 77,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,160 : 143,741.36 = 56,413.48 : x
  2. Step 2: Convert to fraction form
    104,160/143,741.36 = 56,413.48/x
  3. Step 3: Cross multiply
    104,160x = 143,741.36 × 56,413.48
  4. Step 4: Simplify right side
    104,160x = 8,108,950,337.53
  5. Step 5: Solve for x
    x = 8,108,950,337.53/104,160
  6. Step 6: Final answer
    x = 77,850.91

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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.