Home / 156,358,749.47-215,794,208.84-90,279,136.85

Finding the Fourth Proportional to 156,358,749.47, 215,794,208.84 and 90,279,136.85

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Solution

The fourth proportional to 156,358,749.47, 215,794,208.84 and 90,279,136.85 is: 124,596,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,358,749.47 : 215,794,208.84 = 90,279,136.85 : x
  2. Step 2: Convert to fraction form
    156,358,749.47/215,794,208.84 = 90,279,136.85/x
  3. Step 3: Cross multiply
    156,358,749.47x = 215,794,208.84 × 90,279,136.85
  4. Step 4: Simplify right side
    156,358,749.47x = 19,481,714,909,773,472
  5. Step 5: Solve for x
    x = 19,481,714,909,773,472/156,358,749.47
  6. Step 6: Final answer
    x = 124,596,256.85

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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.