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Finding the Fourth Proportional to 103,000.80, 154,501.20 and 43,838.40

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Solution

The fourth proportional to 103,000.80, 154,501.20 and 43,838.40 is: 65,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,000.80 : 154,501.20 = 43,838.40 : x
  2. Step 2: Convert to fraction form
    103,000.80/154,501.20 = 43,838.40/x
  3. Step 3: Cross multiply
    103,000.80x = 154,501.20 × 43,838.40
  4. Step 4: Simplify right side
    103,000.80x = 6,773,085,406.08
  5. Step 5: Solve for x
    x = 6,773,085,406.08/103,000.80
  6. Step 6: Final answer
    x = 65,757.60

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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.