Home / 172,332.61-258,499.01-78,772.75

Finding the Fourth Proportional to 172,332.61, 258,499.01 and 78,772.75

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Solution

The fourth proportional to 172,332.61, 258,499.01 and 78,772.75 is: 118,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,332.61 : 258,499.01 = 78,772.75 : x
  2. Step 2: Convert to fraction form
    172,332.61/258,499.01 = 78,772.75/x
  3. Step 3: Cross multiply
    172,332.61x = 258,499.01 × 78,772.75
  4. Step 4: Simplify right side
    172,332.61x = 20,362,677,889.98
  5. Step 5: Solve for x
    x = 20,362,677,889.98/172,332.61
  6. Step 6: Final answer
    x = 118,159.17

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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.