Home / 109,077.20-163,615.80-90,645.20

Finding the Fourth Proportional to 109,077.20, 163,615.80 and 90,645.20

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Solution

The fourth proportional to 109,077.20, 163,615.80 and 90,645.20 is: 135,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,077.20 : 163,615.80 = 90,645.20 : x
  2. Step 2: Convert to fraction form
    109,077.20/163,615.80 = 90,645.20/x
  3. Step 3: Cross multiply
    109,077.20x = 163,615.80 × 90,645.20
  4. Step 4: Simplify right side
    109,077.20x = 14,830,986,914.16
  5. Step 5: Solve for x
    x = 14,830,986,914.16/109,077.20
  6. Step 6: Final answer
    x = 135,967.80

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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.