Home / 156,839.32-216,439.14-85,219.93

Finding the Fourth Proportional to 156,839.32, 216,439.14 and 85,219.93

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Solution

The fourth proportional to 156,839.32, 216,439.14 and 85,219.93 is: 117,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,839.32 : 216,439.14 = 85,219.93 : x
  2. Step 2: Convert to fraction form
    156,839.32/216,439.14 = 85,219.93/x
  3. Step 3: Cross multiply
    156,839.32x = 216,439.14 × 85,219.93
  4. Step 4: Simplify right side
    156,839.32x = 18,444,928,360.06
  5. Step 5: Solve for x
    x = 18,444,928,360.06/156,839.32
  6. Step 6: Final answer
    x = 117,603.98

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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.