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Finding the Fourth Proportional to 124,381.25, 171,670.62 and 86,633.63

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Solution

The fourth proportional to 124,381.25, 171,670.62 and 86,633.63 is: 119,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,381.25 : 171,670.62 = 86,633.63 : x
  2. Step 2: Convert to fraction form
    124,381.25/171,670.62 = 86,633.63/x
  3. Step 3: Cross multiply
    124,381.25x = 171,670.62 × 86,633.63
  4. Step 4: Simplify right side
    124,381.25x = 14,872,448,116.60
  5. Step 5: Solve for x
    x = 14,872,448,116.60/124,381.25
  6. Step 6: Final answer
    x = 119,571.47

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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.