Home / 112,913.86-155,821.96-77,102.94

Finding the Fourth Proportional to 112,913.86, 155,821.96 and 77,102.94

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Solution

The fourth proportional to 112,913.86, 155,821.96 and 77,102.94 is: 106,402.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,913.86 : 155,821.96 = 77,102.94 : x
  2. Step 2: Convert to fraction form
    112,913.86/155,821.96 = 77,102.94/x
  3. Step 3: Cross multiply
    112,913.86x = 155,821.96 × 77,102.94
  4. Step 4: Simplify right side
    112,913.86x = 12,014,331,232.56
  5. Step 5: Solve for x
    x = 12,014,331,232.56/112,913.86
  6. Step 6: Final answer
    x = 106,402.63

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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.