Home / 163,933.20-245,899.80-90,205.20

Finding the Fourth Proportional to 163,933.20, 245,899.80 and 90,205.20

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Solution

The fourth proportional to 163,933.20, 245,899.80 and 90,205.20 is: 135,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,933.20 : 245,899.80 = 90,205.20 : x
  2. Step 2: Convert to fraction form
    163,933.20/245,899.80 = 90,205.20/x
  3. Step 3: Cross multiply
    163,933.20x = 245,899.80 × 90,205.20
  4. Step 4: Simplify right side
    163,933.20x = 22,181,440,638.96
  5. Step 5: Solve for x
    x = 22,181,440,638.96/163,933.20
  6. Step 6: Final answer
    x = 135,307.80

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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.