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Finding the Fourth Proportional to 121,476.00, 167,409.88 and 87,425.38

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Solution

The fourth proportional to 121,476.00, 167,409.88 and 87,425.38 is: 120,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,476.00 : 167,409.88 = 87,425.38 : x
  2. Step 2: Convert to fraction form
    121,476.00/167,409.88 = 87,425.38/x
  3. Step 3: Cross multiply
    121,476.00x = 167,409.88 × 87,425.38
  4. Step 4: Simplify right side
    121,476.00x = 14,635,871,423.77
  5. Step 5: Solve for x
    x = 14,635,871,423.77/121,476.00
  6. Step 6: Final answer
    x = 120,483.64

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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.