Home / 112,428.96-155,173.74-72,193.56

Finding the Fourth Proportional to 112,428.96, 155,173.74 and 72,193.56

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Solution

The fourth proportional to 112,428.96, 155,173.74 and 72,193.56 is: 99,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,428.96 : 155,173.74 = 72,193.56 : x
  2. Step 2: Convert to fraction form
    112,428.96/155,173.74 = 72,193.56/x
  3. Step 3: Cross multiply
    112,428.96x = 155,173.74 × 72,193.56
  4. Step 4: Simplify right side
    112,428.96x = 11,202,544,709.11
  5. Step 5: Solve for x
    x = 11,202,544,709.11/112,428.96
  6. Step 6: Final answer
    x = 99,641.10

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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.