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Finding the Fourth Proportional to 172,570.96, 258,918.36 and 67,465.36

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Solution

The fourth proportional to 172,570.96, 258,918.36 and 67,465.36 is: 101,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,570.96 : 258,918.36 = 67,465.36 : x
  2. Step 2: Convert to fraction form
    172,570.96/258,918.36 = 67,465.36/x
  3. Step 3: Cross multiply
    172,570.96x = 258,918.36 × 67,465.36
  4. Step 4: Simplify right side
    172,570.96x = 17,468,020,368.01
  5. Step 5: Solve for x
    x = 17,468,020,368.01/172,570.96
  6. Step 6: Final answer
    x = 101,222.25

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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.