Home / 85,519.20-128,060.10-63,211.80

Finding the Fourth Proportional to 85,519.20, 128,060.10 and 63,211.80

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Solution

The fourth proportional to 85,519.20, 128,060.10 and 63,211.80 is: 94,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,519.20 : 128,060.10 = 63,211.80 : x
  2. Step 2: Convert to fraction form
    85,519.20/128,060.10 = 63,211.80/x
  3. Step 3: Cross multiply
    85,519.20x = 128,060.10 × 63,211.80
  4. Step 4: Simplify right side
    85,519.20x = 8,094,909,429.18
  5. Step 5: Solve for x
    x = 8,094,909,429.18/85,519.20
  6. Step 6: Final answer
    x = 94,656.05

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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.