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Finding the Fourth Proportional to 162,390.79, 224,099.57 and 90,770.75

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Solution

The fourth proportional to 162,390.79, 224,099.57 and 90,770.75 is: 125,263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,390.79 : 224,099.57 = 90,770.75 : x
  2. Step 2: Convert to fraction form
    162,390.79/224,099.57 = 90,770.75/x
  3. Step 3: Cross multiply
    162,390.79x = 224,099.57 × 90,770.75
  4. Step 4: Simplify right side
    162,390.79x = 20,341,686,830.75
  5. Step 5: Solve for x
    x = 20,341,686,830.75/162,390.79
  6. Step 6: Final answer
    x = 125,263.80

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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.