Home / 172,669.12-259,038.84-72,829.68

Finding the Fourth Proportional to 172,669.12, 259,038.84 and 72,829.68

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Solution

The fourth proportional to 172,669.12, 259,038.84 and 72,829.68 is: 109,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,669.12 : 259,038.84 = 72,829.68 : x
  2. Step 2: Convert to fraction form
    172,669.12/259,038.84 = 72,829.68/x
  3. Step 3: Cross multiply
    172,669.12x = 259,038.84 × 72,829.68
  4. Step 4: Simplify right side
    172,669.12x = 18,865,715,824.77
  5. Step 5: Solve for x
    x = 18,865,715,824.77/172,669.12
  6. Step 6: Final answer
    x = 109,259.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.