Home / 112,415.64-155,205.92-72,146.76

Finding the Fourth Proportional to 112,415.64, 155,205.92 and 72,146.76

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Solution

The fourth proportional to 112,415.64, 155,205.92 and 72,146.76 is: 99,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,415.64 : 155,205.92 = 72,146.76 : x
  2. Step 2: Convert to fraction form
    112,415.64/155,205.92 = 72,146.76/x
  3. Step 3: Cross multiply
    112,415.64x = 155,205.92 × 72,146.76
  4. Step 4: Simplify right side
    112,415.64x = 11,197,604,260.82
  5. Step 5: Solve for x
    x = 11,197,604,260.82/112,415.64
  6. Step 6: Final answer
    x = 99,608.95

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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.