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Finding the Fourth Proportional to 162,310.71, 223,989.90 and 90,693.75

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Solution

The fourth proportional to 162,310.71, 223,989.90 and 90,693.75 is: 125,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,310.71 : 223,989.90 = 90,693.75 : x
  2. Step 2: Convert to fraction form
    162,310.71/223,989.90 = 90,693.75/x
  3. Step 3: Cross multiply
    162,310.71x = 223,989.90 × 90,693.75
  4. Step 4: Simplify right side
    162,310.71x = 20,314,483,993.13
  5. Step 5: Solve for x
    x = 20,314,483,993.13/162,310.71
  6. Step 6: Final answer
    x = 125,158.00

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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.