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Finding the Fourth Proportional to 105,000.40, 157,500.60 and 67,602.70

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Solution

The fourth proportional to 105,000.40, 157,500.60 and 67,602.70 is: 101,404.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,000.40 : 157,500.60 = 67,602.70 : x
  2. Step 2: Convert to fraction form
    105,000.40/157,500.60 = 67,602.70/x
  3. Step 3: Cross multiply
    105,000.40x = 157,500.60 × 67,602.70
  4. Step 4: Simplify right side
    105,000.40x = 10,647,465,811.62
  5. Step 5: Solve for x
    x = 10,647,465,811.62/105,000.40
  6. Step 6: Final answer
    x = 101,404.05

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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.