Home / 105,748.60-158,622.90-90,002.20

Finding the Fourth Proportional to 105,748.60, 158,622.90 and 90,002.20

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Solution

The fourth proportional to 105,748.60, 158,622.90 and 90,002.20 is: 135,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,748.60 : 158,622.90 = 90,002.20 : x
  2. Step 2: Convert to fraction form
    105,748.60/158,622.90 = 90,002.20/x
  3. Step 3: Cross multiply
    105,748.60x = 158,622.90 × 90,002.20
  4. Step 4: Simplify right side
    105,748.60x = 14,276,409,970.38
  5. Step 5: Solve for x
    x = 14,276,409,970.38/105,748.60
  6. Step 6: Final answer
    x = 135,003.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.