Home / 124,690.20-186,830.10-72,007.80

Finding the Fourth Proportional to 124,690.20, 186,830.10 and 72,007.80

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Solution

The fourth proportional to 124,690.20, 186,830.10 and 72,007.80 is: 107,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,690.20 : 186,830.10 = 72,007.80 : x
  2. Step 2: Convert to fraction form
    124,690.20/186,830.10 = 72,007.80/x
  3. Step 3: Cross multiply
    124,690.20x = 186,830.10 × 72,007.80
  4. Step 4: Simplify right side
    124,690.20x = 13,453,224,474.78
  5. Step 5: Solve for x
    x = 13,453,224,474.78/124,690.20
  6. Step 6: Final answer
    x = 107,893.20

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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.