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Finding the Fourth Proportional to 128,303.52, 192,463.14 and 49,417.98

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Solution

The fourth proportional to 128,303.52, 192,463.14 and 49,417.98 is: 74,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303.52 : 192,463.14 = 49,417.98 : x
  2. Step 2: Convert to fraction form
    128,303.52/192,463.14 = 49,417.98/x
  3. Step 3: Cross multiply
    128,303.52x = 192,463.14 × 49,417.98
  4. Step 4: Simplify right side
    128,303.52x = 9,511,139,603.26
  5. Step 5: Solve for x
    x = 9,511,139,603.26/128,303.52
  6. Step 6: Final answer
    x = 74,130.00

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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.