Home / 156,009,321.76-215,299,632-86,394,702.88

Finding the Fourth Proportional to 156,009,321.76, 215,299,632 and 86,394,702.88

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Solution

The fourth proportional to 156,009,321.76, 215,299,632 and 86,394,702.88 is: 119,228,437.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,009,321.76 : 215,299,632 = 86,394,702.88 : x
  2. Step 2: Convert to fraction form
    156,009,321.76/215,299,632 = 86,394,702.88/x
  3. Step 3: Cross multiply
    156,009,321.76x = 215,299,632 × 86,394,702.88
  4. Step 4: Simplify right side
    156,009,321.76x = 18,600,747,736,813,340
  5. Step 5: Solve for x
    x = 18,600,747,736,813,340/156,009,321.76
  6. Step 6: Final answer
    x = 119,228,437.94

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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.