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Finding the Fourth Proportional to 117,811.60, 176,328.60 and 91,373.20

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Solution

The fourth proportional to 117,811.60, 176,328.60 and 91,373.20 is: 136,758.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,811.60 : 176,328.60 = 91,373.20 : x
  2. Step 2: Convert to fraction form
    117,811.60/176,328.60 = 91,373.20/x
  3. Step 3: Cross multiply
    117,811.60x = 176,328.60 × 91,373.20
  4. Step 4: Simplify right side
    117,811.60x = 16,111,708,433.52
  5. Step 5: Solve for x
    x = 16,111,708,433.52/117,811.60
  6. Step 6: Final answer
    x = 136,758.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.