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Finding the Fourth Proportional to 128,158.64, 191,859.42 and 94,656.20

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Solution

The fourth proportional to 128,158.64, 191,859.42 and 94,656.20 is: 141,704.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158.64 : 191,859.42 = 94,656.20 : x
  2. Step 2: Convert to fraction form
    128,158.64/191,859.42 = 94,656.20/x
  3. Step 3: Cross multiply
    128,158.64x = 191,859.42 × 94,656.20
  4. Step 4: Simplify right side
    128,158.64x = 18,160,683,631.40
  5. Step 5: Solve for x
    x = 18,160,683,631.40/128,158.64
  6. Step 6: Final answer
    x = 141,704.72

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1.5x scale

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.