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Finding the Fourth Proportional to 139,989.66, 210,110.76 and 94,901.91

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Solution

The fourth proportional to 139,989.66, 210,110.76 and 94,901.91 is: 142,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989.66 : 210,110.76 = 94,901.91 : x
  2. Step 2: Convert to fraction form
    139,989.66/210,110.76 = 94,901.91/x
  3. Step 3: Cross multiply
    139,989.66x = 210,110.76 × 94,901.91
  4. Step 4: Simplify right side
    139,989.66x = 19,939,912,435.55
  5. Step 5: Solve for x
    x = 19,939,912,435.55/139,989.66
  6. Step 6: Final answer
    x = 142,438.47

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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.