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Finding the Fourth Proportional to 128,098.34, 191,890.04 and 63,862.64

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Solution

The fourth proportional to 128,098.34, 191,890.04 and 63,862.64 is: 95,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.34 : 191,890.04 = 63,862.64 : x
  2. Step 2: Convert to fraction form
    128,098.34/191,890.04 = 63,862.64/x
  3. Step 3: Cross multiply
    128,098.34x = 191,890.04 × 63,862.64
  4. Step 4: Simplify right side
    128,098.34x = 12,254,604,544.11
  5. Step 5: Solve for x
    x = 12,254,604,544.11/128,098.34
  6. Step 6: Final answer
    x = 95,665.60

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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.