Home / 90,308.32-135,413.10-71,707.84

Finding the Fourth Proportional to 90,308.32, 135,413.10 and 71,707.84

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Solution

The fourth proportional to 90,308.32, 135,413.10 and 71,707.84 is: 107,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,308.32 : 135,413.10 = 71,707.84 : x
  2. Step 2: Convert to fraction form
    90,308.32/135,413.10 = 71,707.84/x
  3. Step 3: Cross multiply
    90,308.32x = 135,413.10 × 71,707.84
  4. Step 4: Simplify right side
    90,308.32x = 9,710,180,908.70
  5. Step 5: Solve for x
    x = 9,710,180,908.70/90,308.32
  6. Step 6: Final answer
    x = 107,522.55

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1.5x scale

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.