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Finding the Fourth Proportional to 163,363.60, 245,045.40 and 103,439.80

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Solution

The fourth proportional to 163,363.60, 245,045.40 and 103,439.80 is: 155,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,363.60 : 245,045.40 = 103,439.80 : x
  2. Step 2: Convert to fraction form
    163,363.60/245,045.40 = 103,439.80/x
  3. Step 3: Cross multiply
    163,363.60x = 245,045.40 × 103,439.80
  4. Step 4: Simplify right side
    163,363.60x = 25,347,447,166.92
  5. Step 5: Solve for x
    x = 25,347,447,166.92/163,363.60
  6. Step 6: Final answer
    x = 155,159.70

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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.