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Finding the Fourth Proportional to 159,720.58, 220,413.36 and 87,127.48

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Solution

The fourth proportional to 159,720.58, 220,413.36 and 87,127.48 is: 120,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,720.58 : 220,413.36 = 87,127.48 : x
  2. Step 2: Convert to fraction form
    159,720.58/220,413.36 = 87,127.48/x
  3. Step 3: Cross multiply
    159,720.58x = 220,413.36 × 87,127.48
  4. Step 4: Simplify right side
    159,720.58x = 19,204,060,615.13
  5. Step 5: Solve for x
    x = 19,204,060,615.13/159,720.58
  6. Step 6: Final answer
    x = 120,235.35

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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.