Home / 172,137.19-257,726.91-87,715.35

Finding the Fourth Proportional to 172,137.19, 257,726.91 and 87,715.35

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Solution

The fourth proportional to 172,137.19, 257,726.91 and 87,715.35 is: 131,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,137.19 : 257,726.91 = 87,715.35 : x
  2. Step 2: Convert to fraction form
    172,137.19/257,726.91 = 87,715.35/x
  3. Step 3: Cross multiply
    172,137.19x = 257,726.91 × 87,715.35
  4. Step 4: Simplify right side
    172,137.19x = 22,606,606,115.07
  5. Step 5: Solve for x
    x = 22,606,606,115.07/172,137.19
  6. Step 6: Final answer
    x = 131,329.01

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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.