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Finding the Fourth Proportional to 134,803.72, 186,027.90 and 74,374.90

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Solution

The fourth proportional to 134,803.72, 186,027.90 and 74,374.90 is: 102,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,803.72 : 186,027.90 = 74,374.90 : x
  2. Step 2: Convert to fraction form
    134,803.72/186,027.90 = 74,374.90/x
  3. Step 3: Cross multiply
    134,803.72x = 186,027.90 × 74,374.90
  4. Step 4: Simplify right side
    134,803.72x = 13,835,806,459.71
  5. Step 5: Solve for x
    x = 13,835,806,459.71/134,803.72
  6. Step 6: Final answer
    x = 102,636.68

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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.