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Finding the Fourth Proportional to 105,092.70, 145,025.19 and 57,346.62

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Solution

The fourth proportional to 105,092.70, 145,025.19 and 57,346.62 is: 79,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,092.70 : 145,025.19 = 57,346.62 : x
  2. Step 2: Convert to fraction form
    105,092.70/145,025.19 = 57,346.62/x
  3. Step 3: Cross multiply
    105,092.70x = 145,025.19 × 57,346.62
  4. Step 4: Simplify right side
    105,092.70x = 8,316,704,461.36
  5. Step 5: Solve for x
    x = 8,316,704,461.36/105,092.70
  6. Step 6: Final answer
    x = 79,136.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.