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Finding the Fourth Proportional to 112,643.63, 155,448.71 and 60,960.73

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Solution

The fourth proportional to 112,643.63, 155,448.71 and 60,960.73 is: 84,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,643.63 : 155,448.71 = 60,960.73 : x
  2. Step 2: Convert to fraction form
    112,643.63/155,448.71 = 60,960.73/x
  3. Step 3: Cross multiply
    112,643.63x = 155,448.71 × 60,960.73
  4. Step 4: Simplify right side
    112,643.63x = 9,476,267,020.13
  5. Step 5: Solve for x
    x = 9,476,267,020.13/112,643.63
  6. Step 6: Final answer
    x = 84,126.08

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1.5x scale

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.