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Finding the Fourth Proportional to 163,458.72, 245,187.71 and 43,515.70

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Solution

The fourth proportional to 163,458.72, 245,187.71 and 43,515.70 is: 65,273.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,458.72 : 245,187.71 = 43,515.70 : x
  2. Step 2: Convert to fraction form
    163,458.72/245,187.71 = 43,515.70/x
  3. Step 3: Cross multiply
    163,458.72x = 245,187.71 × 43,515.70
  4. Step 4: Simplify right side
    163,458.72x = 10,669,513,606.11
  5. Step 5: Solve for x
    x = 10,669,513,606.11/163,458.72
  6. Step 6: Final answer
    x = 65,273.45

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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.