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Finding the Fourth Proportional to 128,476.88, 192,465.90 and 94,681.52

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Solution

The fourth proportional to 128,476.88, 192,465.90 and 94,681.52 is: 141,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,476.88 : 192,465.90 = 94,681.52 : x
  2. Step 2: Convert to fraction form
    128,476.88/192,465.90 = 94,681.52/x
  3. Step 3: Cross multiply
    128,476.88x = 192,465.90 × 94,681.52
  4. Step 4: Simplify right side
    128,476.88x = 18,222,963,960.17
  5. Step 5: Solve for x
    x = 18,222,963,960.17/128,476.88
  6. Step 6: Final answer
    x = 141,838.47

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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.