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Finding the Fourth Proportional to 173,813.80, 260,807.10 and 68,636.20

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Solution

The fourth proportional to 173,813.80, 260,807.10 and 68,636.20 is: 102,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,813.80 : 260,807.10 = 68,636.20 : x
  2. Step 2: Convert to fraction form
    173,813.80/260,807.10 = 68,636.20/x
  3. Step 3: Cross multiply
    173,813.80x = 260,807.10 × 68,636.20
  4. Step 4: Simplify right side
    173,813.80x = 17,900,808,277.02
  5. Step 5: Solve for x
    x = 17,900,808,277.02/173,813.80
  6. Step 6: Final answer
    x = 102,988.42

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1.5x scale

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.