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Finding the Fourth Proportional to 159,317.66, 219,851.34 and 87,702.32

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Solution

The fourth proportional to 159,317.66, 219,851.34 and 87,702.32 is: 121,025.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,317.66 : 219,851.34 = 87,702.32 : x
  2. Step 2: Convert to fraction form
    159,317.66/219,851.34 = 87,702.32/x
  3. Step 3: Cross multiply
    159,317.66x = 219,851.34 × 87,702.32
  4. Step 4: Simplify right side
    159,317.66x = 19,281,472,573.11
  5. Step 5: Solve for x
    x = 19,281,472,573.11/159,317.66
  6. Step 6: Final answer
    x = 121,025.33

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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.