Home / 113,217.68-156,075.74-79,120.30

Finding the Fourth Proportional to 113,217.68, 156,075.74 and 79,120.30

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Solution

The fourth proportional to 113,217.68, 156,075.74 and 79,120.30 is: 109,070.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,217.68 : 156,075.74 = 79,120.30 : x
  2. Step 2: Convert to fraction form
    113,217.68/156,075.74 = 79,120.30/x
  3. Step 3: Cross multiply
    113,217.68x = 156,075.74 × 79,120.30
  4. Step 4: Simplify right side
    113,217.68x = 12,348,759,371.52
  5. Step 5: Solve for x
    x = 12,348,759,371.52/113,217.68
  6. Step 6: Final answer
    x = 109,070.95

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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.