Home / 156,839.07-216,439.23-85,219.09

Finding the Fourth Proportional to 156,839.07, 216,439.23 and 85,219.09

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Solution

The fourth proportional to 156,839.07, 216,439.23 and 85,219.09 is: 117,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,839.07 : 216,439.23 = 85,219.09 : x
  2. Step 2: Convert to fraction form
    156,839.07/216,439.23 = 85,219.09/x
  3. Step 3: Cross multiply
    156,839.07x = 216,439.23 × 85,219.09
  4. Step 4: Simplify right side
    156,839.07x = 18,444,754,220.90
  5. Step 5: Solve for x
    x = 18,444,754,220.90/156,839.07
  6. Step 6: Final answer
    x = 117,603.06

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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.