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Finding the Fourth Proportional to 162,172.50, 223,771.35 and 90,541.02

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Solution

The fourth proportional to 162,172.50, 223,771.35 and 90,541.02 is: 124,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,172.50 : 223,771.35 = 90,541.02 : x
  2. Step 2: Convert to fraction form
    162,172.50/223,771.35 = 90,541.02/x
  3. Step 3: Cross multiply
    162,172.50x = 223,771.35 × 90,541.02
  4. Step 4: Simplify right side
    162,172.50x = 20,260,486,275.78
  5. Step 5: Solve for x
    x = 20,260,486,275.78/162,172.50
  6. Step 6: Final answer
    x = 124,931.70

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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.