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Finding the Fourth Proportional to 162,970.58, 224,899.88 and 90,378.58

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Solution

The fourth proportional to 162,970.58, 224,899.88 and 90,378.58 is: 124,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,970.58 : 224,899.88 = 90,378.58 : x
  2. Step 2: Convert to fraction form
    162,970.58/224,899.88 = 90,378.58/x
  3. Step 3: Cross multiply
    162,970.58x = 224,899.88 × 90,378.58
  4. Step 4: Simplify right side
    162,970.58x = 20,326,131,796.57
  5. Step 5: Solve for x
    x = 20,326,131,796.57/162,970.58
  6. Step 6: Final answer
    x = 124,722.71

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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.