Home / 112,913.15-155,821.77-61,930.76

Finding the Fourth Proportional to 112,913.15, 155,821.77 and 61,930.76

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Solution

The fourth proportional to 112,913.15, 155,821.77 and 61,930.76 is: 85,465.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,913.15 : 155,821.77 = 61,930.76 : x
  2. Step 2: Convert to fraction form
    112,913.15/155,821.77 = 61,930.76/x
  3. Step 3: Cross multiply
    112,913.15x = 155,821.77 × 61,930.76
  4. Step 4: Simplify right side
    112,913.15x = 9,650,159,861.54
  5. Step 5: Solve for x
    x = 9,650,159,861.54/112,913.15
  6. Step 6: Final answer
    x = 85,465.34

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1.5x scale

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.