Home / 153,922.28-212,410.67-85,940.30

Finding the Fourth Proportional to 153,922.28, 212,410.67 and 85,940.30

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Solution

The fourth proportional to 153,922.28, 212,410.67 and 85,940.30 is: 118,596.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,922.28 : 212,410.67 = 85,940.30 : x
  2. Step 2: Convert to fraction form
    153,922.28/212,410.67 = 85,940.30/x
  3. Step 3: Cross multiply
    153,922.28x = 212,410.67 × 85,940.30
  4. Step 4: Simplify right side
    153,922.28x = 18,254,635,640.95
  5. Step 5: Solve for x
    x = 18,254,635,640.95/153,922.28
  6. Step 6: Final answer
    x = 118,596.45

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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.