Home / 171,509.10-257,421.75-87,329.94

Finding the Fourth Proportional to 171,509.10, 257,421.75 and 87,329.94

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Solution

The fourth proportional to 171,509.10, 257,421.75 and 87,329.94 is: 131,075.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,509.10 : 257,421.75 = 87,329.94 : x
  2. Step 2: Convert to fraction form
    171,509.10/257,421.75 = 87,329.94/x
  3. Step 3: Cross multiply
    171,509.10x = 257,421.75 × 87,329.94
  4. Step 4: Simplify right side
    171,509.10x = 22,480,625,982.20
  5. Step 5: Solve for x
    x = 22,480,625,982.20/171,509.10
  6. Step 6: Final answer
    x = 131,075.41

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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.