Home / 112,972.62-155,896.95-61,984.20

Finding the Fourth Proportional to 112,972.62, 155,896.95 and 61,984.20

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Solution

The fourth proportional to 112,972.62, 155,896.95 and 61,984.20 is: 85,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,972.62 : 155,896.95 = 61,984.20 : x
  2. Step 2: Convert to fraction form
    112,972.62/155,896.95 = 61,984.20/x
  3. Step 3: Cross multiply
    112,972.62x = 155,896.95 × 61,984.20
  4. Step 4: Simplify right side
    112,972.62x = 9,663,147,027.36
  5. Step 5: Solve for x
    x = 9,663,147,027.36/112,972.62
  6. Step 6: Final answer
    x = 85,535.30

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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.