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Finding the Fourth Proportional to 117,393.18, 176,083.29 and 85,835.58

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Solution

The fourth proportional to 117,393.18, 176,083.29 and 85,835.58 is: 128,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,393.18 : 176,083.29 = 85,835.58 : x
  2. Step 2: Convert to fraction form
    117,393.18/176,083.29 = 85,835.58/x
  3. Step 3: Cross multiply
    117,393.18x = 176,083.29 × 85,835.58
  4. Step 4: Simplify right side
    117,393.18x = 15,114,211,325.46
  5. Step 5: Solve for x
    x = 15,114,211,325.46/117,393.18
  6. Step 6: Final answer
    x = 128,748.63

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1.5x scale

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.