Home / 156,558.22-216,070.68-87,673.90

Finding the Fourth Proportional to 156,558.22, 216,070.68 and 87,673.90

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Solution

The fourth proportional to 156,558.22, 216,070.68 and 87,673.90 is: 121,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,558.22 : 216,070.68 = 87,673.90 : x
  2. Step 2: Convert to fraction form
    156,558.22/216,070.68 = 87,673.90/x
  3. Step 3: Cross multiply
    156,558.22x = 216,070.68 × 87,673.90
  4. Step 4: Simplify right side
    156,558.22x = 18,943,759,191.25
  5. Step 5: Solve for x
    x = 18,943,759,191.25/156,558.22
  6. Step 6: Final answer
    x = 121,001.37

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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.