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Finding the Fourth Proportional to 150,014.40, 206,985.60 and 86,340.48

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Solution

The fourth proportional to 150,014.40, 206,985.60 and 86,340.48 is: 119,130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,014.40 : 206,985.60 = 86,340.48 : x
  2. Step 2: Convert to fraction form
    150,014.40/206,985.60 = 86,340.48/x
  3. Step 3: Cross multiply
    150,014.40x = 206,985.60 × 86,340.48
  4. Step 4: Simplify right side
    150,014.40x = 17,871,236,057.09
  5. Step 5: Solve for x
    x = 17,871,236,057.09/150,014.40
  6. Step 6: Final answer
    x = 119,130.14

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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.