Home / 158,909.66-219,241.02-90,901.85

Finding the Fourth Proportional to 158,909.66, 219,241.02 and 90,901.85

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Solution

The fourth proportional to 158,909.66, 219,241.02 and 90,901.85 is: 125,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,909.66 : 219,241.02 = 90,901.85 : x
  2. Step 2: Convert to fraction form
    158,909.66/219,241.02 = 90,901.85/x
  3. Step 3: Cross multiply
    158,909.66x = 219,241.02 × 90,901.85
  4. Step 4: Simplify right side
    158,909.66x = 19,929,414,313.89
  5. Step 5: Solve for x
    x = 19,929,414,313.89/158,909.66
  6. Step 6: Final answer
    x = 125,413.49

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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.