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Finding the Fourth Proportional to 163,513.20, 245,269.80 and 122,041.20

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Solution

The fourth proportional to 163,513.20, 245,269.80 and 122,041.20 is: 183,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,513.20 : 245,269.80 = 122,041.20 : x
  2. Step 2: Convert to fraction form
    163,513.20/245,269.80 = 122,041.20/x
  3. Step 3: Cross multiply
    163,513.20x = 245,269.80 × 122,041.20
  4. Step 4: Simplify right side
    163,513.20x = 29,933,020,715.76
  5. Step 5: Solve for x
    x = 29,933,020,715.76/163,513.20
  6. Step 6: Final answer
    x = 183,061.80

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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.