Home / 127,931.40-191,880.30-39,193.80

Finding the Fourth Proportional to 127,931.40, 191,880.30 and 39,193.80

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Solution

The fourth proportional to 127,931.40, 191,880.30 and 39,193.80 is: 58,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,931.40 : 191,880.30 = 39,193.80 : x
  2. Step 2: Convert to fraction form
    127,931.40/191,880.30 = 39,193.80/x
  3. Step 3: Cross multiply
    127,931.40x = 191,880.30 × 39,193.80
  4. Step 4: Simplify right side
    127,931.40x = 7,520,518,102.14
  5. Step 5: Solve for x
    x = 7,520,518,102.14/127,931.40
  6. Step 6: Final answer
    x = 58,785.55

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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.