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Finding the Fourth Proportional to 162,391.13, 224,103.81 and 90,783.08

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Solution

The fourth proportional to 162,391.13, 224,103.81 and 90,783.08 is: 125,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,391.13 : 224,103.81 = 90,783.08 : x
  2. Step 2: Convert to fraction form
    162,391.13/224,103.81 = 90,783.08/x
  3. Step 3: Cross multiply
    162,391.13x = 224,103.81 × 90,783.08
  4. Step 4: Simplify right side
    162,391.13x = 20,344,832,991.02
  5. Step 5: Solve for x
    x = 20,344,832,991.02/162,391.13
  6. Step 6: Final answer
    x = 125,282.91

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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.