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Finding the Fourth Proportional to 128,079.60, 191,862.18 and 63,844.02

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Solution

The fourth proportional to 128,079.60, 191,862.18 and 63,844.02 is: 95,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,079.60 : 191,862.18 = 63,844.02 : x
  2. Step 2: Convert to fraction form
    128,079.60/191,862.18 = 63,844.02/x
  3. Step 3: Cross multiply
    128,079.60x = 191,862.18 × 63,844.02
  4. Step 4: Simplify right side
    128,079.60x = 12,249,252,857.16
  5. Step 5: Solve for x
    x = 12,249,252,857.16/128,079.60
  6. Step 6: Final answer
    x = 95,637.81

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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.