Home / 112,446.84-155,161.60-72,215.08

Finding the Fourth Proportional to 112,446.84, 155,161.60 and 72,215.08

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Solution

The fourth proportional to 112,446.84, 155,161.60 and 72,215.08 is: 99,647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,446.84 : 155,161.60 = 72,215.08 : x
  2. Step 2: Convert to fraction form
    112,446.84/155,161.60 = 72,215.08/x
  3. Step 3: Cross multiply
    112,446.84x = 155,161.60 × 72,215.08
  4. Step 4: Simplify right side
    112,446.84x = 11,205,007,356.93
  5. Step 5: Solve for x
    x = 11,205,007,356.93/112,446.84
  6. Step 6: Final answer
    x = 99,647.15

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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.