Home / 161,886.30-242,829.45-90,735.90

Finding the Fourth Proportional to 161,886.30, 242,829.45 and 90,735.90

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Solution

The fourth proportional to 161,886.30, 242,829.45 and 90,735.90 is: 136,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,886.30 : 242,829.45 = 90,735.90 : x
  2. Step 2: Convert to fraction form
    161,886.30/242,829.45 = 90,735.90/x
  3. Step 3: Cross multiply
    161,886.30x = 242,829.45 × 90,735.90
  4. Step 4: Simplify right side
    161,886.30x = 22,033,348,692.26
  5. Step 5: Solve for x
    x = 22,033,348,692.26/161,886.30
  6. Step 6: Final answer
    x = 136,103.85

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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.