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Finding the Fourth Proportional to 107,285.88, 148,020.30 and 61,957.89

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Solution

The fourth proportional to 107,285.88, 148,020.30 and 61,957.89 is: 85,482.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,285.88 : 148,020.30 = 61,957.89 : x
  2. Step 2: Convert to fraction form
    107,285.88/148,020.30 = 61,957.89/x
  3. Step 3: Cross multiply
    107,285.88x = 148,020.30 × 61,957.89
  4. Step 4: Simplify right side
    107,285.88x = 9,171,025,465.17
  5. Step 5: Solve for x
    x = 9,171,025,465.17/107,285.88
  6. Step 6: Final answer
    x = 85,482.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.