Home / 159,488,355-220,094,018.46-86,149,497.72

Finding the Fourth Proportional to 159,488,355, 220,094,018.46 and 86,149,497.72

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Solution

The fourth proportional to 159,488,355, 220,094,018.46 and 86,149,497.72 is: 118,886,354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488,355 : 220,094,018.46 = 86,149,497.72 : x
  2. Step 2: Convert to fraction form
    159,488,355/220,094,018.46 = 86,149,497.72/x
  3. Step 3: Cross multiply
    159,488,355x = 220,094,018.46 × 86,149,497.72
  4. Step 4: Simplify right side
    159,488,355x = 18,960,989,141,505,408
  5. Step 5: Solve for x
    x = 18,960,989,141,505,408/159,488,355
  6. Step 6: Final answer
    x = 118,886,354.69

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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.