Home / 156,296,451.21-215,654,564.19-90,202,905.51

Finding the Fourth Proportional to 156,296,451.21, 215,654,564.19 and 90,202,905.51

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Solution

The fourth proportional to 156,296,451.21, 215,654,564.19 and 90,202,905.51 is: 124,460,076.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,296,451.21 : 215,654,564.19 = 90,202,905.51 : x
  2. Step 2: Convert to fraction form
    156,296,451.21/215,654,564.19 = 90,202,905.51/x
  3. Step 3: Cross multiply
    156,296,451.21x = 215,654,564.19 × 90,202,905.51
  4. Step 4: Simplify right side
    156,296,451.21x = 19,452,668,276,430,800
  5. Step 5: Solve for x
    x = 19,452,668,276,430,800/156,296,451.21
  6. Step 6: Final answer
    x = 124,460,076.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.