Home / 208,021,669.76-286,607,678.55-137,331,380.85

Finding the Fourth Proportional to 208,021,669.76, 286,607,678.55 and 137,331,380.85

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Solution

The fourth proportional to 208,021,669.76, 286,607,678.55 and 137,331,380.85 is: 189,212,154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,021,669.76 : 286,607,678.55 = 137,331,380.85 : x
  2. Step 2: Convert to fraction form
    208,021,669.76/286,607,678.55 = 137,331,380.85/x
  3. Step 3: Cross multiply
    208,021,669.76x = 286,607,678.55 × 137,331,380.85
  4. Step 4: Simplify right side
    208,021,669.76x = 39,360,228,257,484,424
  5. Step 5: Solve for x
    x = 39,360,228,257,484,424/208,021,669.76
  6. Step 6: Final answer
    x = 189,212,154.21

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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.