Home / 112,721.40-155,572.11-64,965.42

Finding the Fourth Proportional to 112,721.40, 155,572.11 and 64,965.42

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Solution

The fourth proportional to 112,721.40, 155,572.11 and 64,965.42 is: 89,661.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,721.40 : 155,572.11 = 64,965.42 : x
  2. Step 2: Convert to fraction form
    112,721.40/155,572.11 = 64,965.42/x
  3. Step 3: Cross multiply
    112,721.40x = 155,572.11 × 64,965.42
  4. Step 4: Simplify right side
    112,721.40x = 10,106,807,466.44
  5. Step 5: Solve for x
    x = 10,106,807,466.44/112,721.40
  6. Step 6: Final answer
    x = 89,661.83

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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.