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Finding the Fourth Proportional to 100,701.60, 150,923.18 and 85,090.46

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Solution

The fourth proportional to 100,701.60, 150,923.18 and 85,090.46 is: 127,526.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,701.60 : 150,923.18 = 85,090.46 : x
  2. Step 2: Convert to fraction form
    100,701.60/150,923.18 = 85,090.46/x
  3. Step 3: Cross multiply
    100,701.60x = 150,923.18 × 85,090.46
  4. Step 4: Simplify right side
    100,701.60x = 12,842,122,810.86
  5. Step 5: Solve for x
    x = 12,842,122,810.86/100,701.60
  6. Step 6: Final answer
    x = 127,526.50

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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.