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Finding the Fourth Proportional to 134,836, 186,073.53 and 74,406.62

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Solution

The fourth proportional to 134,836, 186,073.53 and 74,406.62 is: 102,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,836 : 186,073.53 = 74,406.62 : x
  2. Step 2: Convert to fraction form
    134,836/186,073.53 = 74,406.62/x
  3. Step 3: Cross multiply
    134,836x = 186,073.53 × 74,406.62
  4. Step 4: Simplify right side
    134,836x = 13,845,102,438.77
  5. Step 5: Solve for x
    x = 13,845,102,438.77/134,836
  6. Step 6: Final answer
    x = 102,681.05

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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.