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Finding the Fourth Proportional to 151,048.59, 208,435.24 and 87,374.08

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Solution

The fourth proportional to 151,048.59, 208,435.24 and 87,374.08 is: 120,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,048.59 : 208,435.24 = 87,374.08 : x
  2. Step 2: Convert to fraction form
    151,048.59/208,435.24 = 87,374.08/x
  3. Step 3: Cross multiply
    151,048.59x = 208,435.24 × 87,374.08
  4. Step 4: Simplify right side
    151,048.59x = 18,211,837,334.58
  5. Step 5: Solve for x
    x = 18,211,837,334.58/151,048.59
  6. Step 6: Final answer
    x = 120,569.40

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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.