Home / 112,840.09-155,824.66-72,623.89

Finding the Fourth Proportional to 112,840.09, 155,824.66 and 72,623.89

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Solution

The fourth proportional to 112,840.09, 155,824.66 and 72,623.89 is: 100,288.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,840.09 : 155,824.66 = 72,623.89 : x
  2. Step 2: Convert to fraction form
    112,840.09/155,824.66 = 72,623.89/x
  3. Step 3: Cross multiply
    112,840.09x = 155,824.66 × 72,623.89
  4. Step 4: Simplify right side
    112,840.09x = 11,316,593,252.69
  5. Step 5: Solve for x
    x = 11,316,593,252.69/112,840.09
  6. Step 6: Final answer
    x = 100,288.77

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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.