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Finding the Fourth Proportional to 109,663.87, 151,327.69 and 61,921.93

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Solution

The fourth proportional to 109,663.87, 151,327.69 and 61,921.93 is: 85,447.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,663.87 : 151,327.69 = 61,921.93 : x
  2. Step 2: Convert to fraction form
    109,663.87/151,327.69 = 61,921.93/x
  3. Step 3: Cross multiply
    109,663.87x = 151,327.69 × 61,921.93
  4. Step 4: Simplify right side
    109,663.87x = 9,370,502,627.24
  5. Step 5: Solve for x
    x = 9,370,502,627.24/109,663.87
  6. Step 6: Final answer
    x = 85,447.49

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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.