Home / 156,134,738.45-215,467,222.71-86,521,281.86

Finding the Fourth Proportional to 156,134,738.45, 215,467,222.71 and 86,521,281.86

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Solution

The fourth proportional to 156,134,738.45, 215,467,222.71 and 86,521,281.86 is: 119,400,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,134,738.45 : 215,467,222.71 = 86,521,281.86 : x
  2. Step 2: Convert to fraction form
    156,134,738.45/215,467,222.71 = 86,521,281.86/x
  3. Step 3: Cross multiply
    156,134,738.45x = 215,467,222.71 × 86,521,281.86
  4. Step 4: Simplify right side
    156,134,738.45x = 18,642,500,306,605,968
  5. Step 5: Solve for x
    x = 18,642,500,306,605,968/156,134,738.45
  6. Step 6: Final answer
    x = 119,400,080.29

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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.