Home / 156,938.86-216,579.87-85,323.79

Finding the Fourth Proportional to 156,938.86, 216,579.87 and 85,323.79

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Solution

The fourth proportional to 156,938.86, 216,579.87 and 85,323.79 is: 117,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.86 : 216,579.87 = 85,323.79 : x
  2. Step 2: Convert to fraction form
    156,938.86/216,579.87 = 85,323.79/x
  3. Step 3: Cross multiply
    156,938.86x = 216,579.87 × 85,323.79
  4. Step 4: Simplify right side
    156,938.86x = 18,479,415,346.11
  5. Step 5: Solve for x
    x = 18,479,415,346.11/156,938.86
  6. Step 6: Final answer
    x = 117,749.14

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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.