Home / 104,785.20-144,601.20-57,038.40

Finding the Fourth Proportional to 104,785.20, 144,601.20 and 57,038.40

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Solution

The fourth proportional to 104,785.20, 144,601.20 and 57,038.40 is: 78,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,785.20 : 144,601.20 = 57,038.40 : x
  2. Step 2: Convert to fraction form
    104,785.20/144,601.20 = 57,038.40/x
  3. Step 3: Cross multiply
    104,785.20x = 144,601.20 × 57,038.40
  4. Step 4: Simplify right side
    104,785.20x = 8,247,821,086.08
  5. Step 5: Solve for x
    x = 8,247,821,086.08/104,785.20
  6. Step 6: Final answer
    x = 78,711.70

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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.