Home / 159,070.47-219,517.83-87,455.04

Finding the Fourth Proportional to 159,070.47, 219,517.83 and 87,455.04

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Solution

The fourth proportional to 159,070.47, 219,517.83 and 87,455.04 is: 120,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,070.47 : 219,517.83 = 87,455.04 : x
  2. Step 2: Convert to fraction form
    159,070.47/219,517.83 = 87,455.04/x
  3. Step 3: Cross multiply
    159,070.47x = 219,517.83 × 87,455.04
  4. Step 4: Simplify right side
    159,070.47x = 19,197,940,603.36
  5. Step 5: Solve for x
    x = 19,197,940,603.36/159,070.47
  6. Step 6: Final answer
    x = 120,688.27

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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.