Home / 112,439.34-155,216.25-85,582.98

Finding the Fourth Proportional to 112,439.34, 155,216.25 and 85,582.98

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Solution

The fourth proportional to 112,439.34, 155,216.25 and 85,582.98 is: 118,142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,439.34 : 155,216.25 = 85,582.98 : x
  2. Step 2: Convert to fraction form
    112,439.34/155,216.25 = 85,582.98/x
  3. Step 3: Cross multiply
    112,439.34x = 155,216.25 × 85,582.98
  4. Step 4: Simplify right side
    112,439.34x = 13,283,869,219.43
  5. Step 5: Solve for x
    x = 13,283,869,219.43/112,439.34
  6. Step 6: Final answer
    x = 118,142.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.