Home / 156,809,896.45-216,424,743.08-90,766,808.93

Finding the Fourth Proportional to 156,809,896.45, 216,424,743.08 and 90,766,808.93

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Solution

The fourth proportional to 156,809,896.45, 216,424,743.08 and 90,766,808.93 is: 125,273,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809,896.45 : 216,424,743.08 = 90,766,808.93 : x
  2. Step 2: Convert to fraction form
    156,809,896.45/216,424,743.08 = 90,766,808.93/x
  3. Step 3: Cross multiply
    156,809,896.45x = 216,424,743.08 × 90,766,808.93
  4. Step 4: Simplify right side
    156,809,896.45x = 19,644,183,302,953,928
  5. Step 5: Solve for x
    x = 19,644,183,302,953,928/156,809,896.45
  6. Step 6: Final answer
    x = 125,273,874.60

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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.