Home / 112,445.84-155,160.23-72,214.08

Finding the Fourth Proportional to 112,445.84, 155,160.23 and 72,214.08

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Solution

The fourth proportional to 112,445.84, 155,160.23 and 72,214.08 is: 99,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,445.84 : 155,160.23 = 72,214.08 : x
  2. Step 2: Convert to fraction form
    112,445.84/155,160.23 = 72,214.08/x
  3. Step 3: Cross multiply
    112,445.84x = 155,160.23 × 72,214.08
  4. Step 4: Simplify right side
    112,445.84x = 11,204,752,900.97
  5. Step 5: Solve for x
    x = 11,204,752,900.97/112,445.84
  6. Step 6: Final answer
    x = 99,645.78

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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.