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Finding the Fourth Proportional to 134,666.49, 185,831.42 and 74,234.01

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Solution

The fourth proportional to 134,666.49, 185,831.42 and 74,234.01 is: 102,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,666.49 : 185,831.42 = 74,234.01 : x
  2. Step 2: Convert to fraction form
    134,666.49/185,831.42 = 74,234.01/x
  3. Step 3: Cross multiply
    134,666.49x = 185,831.42 × 74,234.01
  4. Step 4: Simplify right side
    134,666.49x = 13,795,011,119.42
  5. Step 5: Solve for x
    x = 13,795,011,119.42/134,666.49
  6. Step 6: Final answer
    x = 102,438.34

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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.