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Finding the Fourth Proportional to 134,685.96, 185,874.98 and 74,256.50

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Solution

The fourth proportional to 134,685.96, 185,874.98 and 74,256.50 is: 102,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,685.96 : 185,874.98 = 74,256.50 : x
  2. Step 2: Convert to fraction form
    134,685.96/185,874.98 = 74,256.50/x
  3. Step 3: Cross multiply
    134,685.96x = 185,874.98 × 74,256.50
  4. Step 4: Simplify right side
    134,685.96x = 13,802,424,151.71
  5. Step 5: Solve for x
    x = 13,802,424,151.71/134,685.96
  6. Step 6: Final answer
    x = 102,478.57

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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.