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Finding the Fourth Proportional to 124,699.20, 187,048.80 and 49,830.90

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Solution

The fourth proportional to 124,699.20, 187,048.80 and 49,830.90 is: 74,746.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,699.20 : 187,048.80 = 49,830.90 : x
  2. Step 2: Convert to fraction form
    124,699.20/187,048.80 = 49,830.90/x
  3. Step 3: Cross multiply
    124,699.20x = 187,048.80 × 49,830.90
  4. Step 4: Simplify right side
    124,699.20x = 9,320,810,047.92
  5. Step 5: Solve for x
    x = 9,320,810,047.92/124,699.20
  6. Step 6: Final answer
    x = 74,746.35

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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.