Home / 85,889.28-119,320.80-85,120.32

Finding the Fourth Proportional to 85,889.28, 119,320.80 and 85,120.32

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Solution

The fourth proportional to 85,889.28, 119,320.80 and 85,120.32 is: 118,252.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,889.28 : 119,320.80 = 85,120.32 : x
  2. Step 2: Convert to fraction form
    85,889.28/119,320.80 = 85,120.32/x
  3. Step 3: Cross multiply
    85,889.28x = 119,320.80 × 85,120.32
  4. Step 4: Simplify right side
    85,889.28x = 10,156,624,678.66
  5. Step 5: Solve for x
    x = 10,156,624,678.66/85,889.28
  6. Step 6: Final answer
    x = 118,252.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.