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Finding the Fourth Proportional to 134,352, 185,406.48 and 74,736

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Solution

The fourth proportional to 134,352, 185,406.48 and 74,736 is: 103,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,352 : 185,406.48 = 74,736 : x
  2. Step 2: Convert to fraction form
    134,352/185,406.48 = 74,736/x
  3. Step 3: Cross multiply
    134,352x = 185,406.48 × 74,736
  4. Step 4: Simplify right side
    134,352x = 13,856,538,689.28
  5. Step 5: Solve for x
    x = 13,856,538,689.28/134,352
  6. Step 6: Final answer
    x = 103,136.08

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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.