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Finding the Fourth Proportional to 118,748.64, 178,142.40 and 56,398.08

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Solution

The fourth proportional to 118,748.64, 178,142.40 and 56,398.08 is: 84,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,748.64 : 178,142.40 = 56,398.08 : x
  2. Step 2: Convert to fraction form
    118,748.64/178,142.40 = 56,398.08/x
  3. Step 3: Cross multiply
    118,748.64x = 178,142.40 × 56,398.08
  4. Step 4: Simplify right side
    118,748.64x = 10,046,889,326.59
  5. Step 5: Solve for x
    x = 10,046,889,326.59/118,748.64
  6. Step 6: Final answer
    x = 84,606.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.