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Finding the Fourth Proportional to 107,539.77, 148,413.20 and 64,520.88

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Solution

The fourth proportional to 107,539.77, 148,413.20 and 64,520.88 is: 89,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,539.77 : 148,413.20 = 64,520.88 : x
  2. Step 2: Convert to fraction form
    107,539.77/148,413.20 = 64,520.88/x
  3. Step 3: Cross multiply
    107,539.77x = 148,413.20 × 64,520.88
  4. Step 4: Simplify right side
    107,539.77x = 9,575,749,945.01
  5. Step 5: Solve for x
    x = 9,575,749,945.01/107,539.77
  6. Step 6: Final answer
    x = 89,043.80

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1.5x scale

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.