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Finding the Fourth Proportional to 159,117.34, 219,573.76 and 87,495.52

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Solution

The fourth proportional to 159,117.34, 219,573.76 and 87,495.52 is: 120,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,117.34 : 219,573.76 = 87,495.52 : x
  2. Step 2: Convert to fraction form
    159,117.34/219,573.76 = 87,495.52/x
  3. Step 3: Cross multiply
    159,117.34x = 219,573.76 × 87,495.52
  4. Step 4: Simplify right side
    159,117.34x = 19,211,718,774.21
  5. Step 5: Solve for x
    x = 19,211,718,774.21/159,117.34
  6. Step 6: Final answer
    x = 120,739.32

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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.