Home / 102,445.10-141,321.54-68,442.72

Finding the Fourth Proportional to 102,445.10, 141,321.54 and 68,442.72

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Solution

The fourth proportional to 102,445.10, 141,321.54 and 68,442.72 is: 94,415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,445.10 : 141,321.54 = 68,442.72 : x
  2. Step 2: Convert to fraction form
    102,445.10/141,321.54 = 68,442.72/x
  3. Step 3: Cross multiply
    102,445.10x = 141,321.54 × 68,442.72
  4. Step 4: Simplify right side
    102,445.10x = 9,672,430,592.19
  5. Step 5: Solve for x
    x = 9,672,430,592.19/102,445.10
  6. Step 6: Final answer
    x = 94,415.75

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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.