Home / 131,785.20-197,677.80-72,590.40

Finding the Fourth Proportional to 131,785.20, 197,677.80 and 72,590.40

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Solution

The fourth proportional to 131,785.20, 197,677.80 and 72,590.40 is: 108,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,785.20 : 197,677.80 = 72,590.40 : x
  2. Step 2: Convert to fraction form
    131,785.20/197,677.80 = 72,590.40/x
  3. Step 3: Cross multiply
    131,785.20x = 197,677.80 × 72,590.40
  4. Step 4: Simplify right side
    131,785.20x = 14,349,510,573.12
  5. Step 5: Solve for x
    x = 14,349,510,573.12/131,785.20
  6. Step 6: Final answer
    x = 108,885.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.