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Finding the Fourth Proportional to 139,970.93, 193,098.93 and 88,956.32

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Solution

The fourth proportional to 139,970.93, 193,098.93 and 88,956.32 is: 122,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,970.93 : 193,098.93 = 88,956.32 : x
  2. Step 2: Convert to fraction form
    139,970.93/193,098.93 = 88,956.32/x
  3. Step 3: Cross multiply
    139,970.93x = 193,098.93 × 88,956.32
  4. Step 4: Simplify right side
    139,970.93x = 17,177,369,243.24
  5. Step 5: Solve for x
    x = 17,177,369,243.24/139,970.93
  6. Step 6: Final answer
    x = 122,720.98

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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.