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Finding the Fourth Proportional to 163,645.66, 245,440.66 and 45,289.28

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Solution

The fourth proportional to 163,645.66, 245,440.66 and 45,289.28 is: 67,926.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,645.66 : 245,440.66 = 45,289.28 : x
  2. Step 2: Convert to fraction form
    163,645.66/245,440.66 = 45,289.28/x
  3. Step 3: Cross multiply
    163,645.66x = 245,440.66 × 45,289.28
  4. Step 4: Simplify right side
    163,645.66x = 11,115,830,774.12
  5. Step 5: Solve for x
    x = 11,115,830,774.12/163,645.66
  6. Step 6: Final answer
    x = 67,926.22

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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.