Home / 112,406.64-155,193.48-72,137.76

Finding the Fourth Proportional to 112,406.64, 155,193.48 and 72,137.76

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Solution

The fourth proportional to 112,406.64, 155,193.48 and 72,137.76 is: 99,596.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,406.64 : 155,193.48 = 72,137.76 : x
  2. Step 2: Convert to fraction form
    112,406.64/155,193.48 = 72,137.76/x
  3. Step 3: Cross multiply
    112,406.64x = 155,193.48 × 72,137.76
  4. Step 4: Simplify right side
    112,406.64x = 11,195,310,013.80
  5. Step 5: Solve for x
    x = 11,195,310,013.80/112,406.64
  6. Step 6: Final answer
    x = 99,596.52

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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.