Home / 145,061.76-217,388.32-115,347.68

Finding the Fourth Proportional to 145,061.76, 217,388.32 and 115,347.68

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Solution

The fourth proportional to 145,061.76, 217,388.32 and 115,347.68 is: 172,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,061.76 : 217,388.32 = 115,347.68 : x
  2. Step 2: Convert to fraction form
    145,061.76/217,388.32 = 115,347.68/x
  3. Step 3: Cross multiply
    145,061.76x = 217,388.32 × 115,347.68
  4. Step 4: Simplify right side
    145,061.76x = 25,075,238,371.10
  5. Step 5: Solve for x
    x = 25,075,238,371.10/145,061.76
  6. Step 6: Final answer
    x = 172,859.05

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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.