Home / 217,373.04-326,108.64-77,131.68

Finding the Fourth Proportional to 217,373.04, 326,108.64 and 77,131.68

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Solution

The fourth proportional to 217,373.04, 326,108.64 and 77,131.68 is: 115,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,373.04 : 326,108.64 = 77,131.68 : x
  2. Step 2: Convert to fraction form
    217,373.04/326,108.64 = 77,131.68/x
  3. Step 3: Cross multiply
    217,373.04x = 326,108.64 × 77,131.68
  4. Step 4: Simplify right side
    217,373.04x = 25,153,307,265.72
  5. Step 5: Solve for x
    x = 25,153,307,265.72/217,373.04
  6. Step 6: Final answer
    x = 115,714.94

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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.