Home / 107,336.85-148,022.85-78,238.77

Finding the Fourth Proportional to 107,336.85, 148,022.85 and 78,238.77

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Solution

The fourth proportional to 107,336.85, 148,022.85 and 78,238.77 is: 107,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,336.85 : 148,022.85 = 78,238.77 : x
  2. Step 2: Convert to fraction form
    107,336.85/148,022.85 = 78,238.77/x
  3. Step 3: Cross multiply
    107,336.85x = 148,022.85 × 78,238.77
  4. Step 4: Simplify right side
    107,336.85x = 11,581,125,715.89
  5. Step 5: Solve for x
    x = 11,581,125,715.89/107,336.85
  6. Step 6: Final answer
    x = 107,895.15

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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.