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Finding the Fourth Proportional to 150,347.54, 207,421.73 and 85,820.40

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Solution

The fourth proportional to 150,347.54, 207,421.73 and 85,820.40 is: 118,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,347.54 : 207,421.73 = 85,820.40 : x
  2. Step 2: Convert to fraction form
    150,347.54/207,421.73 = 85,820.40/x
  3. Step 3: Cross multiply
    150,347.54x = 207,421.73 × 85,820.40
  4. Step 4: Simplify right side
    150,347.54x = 17,801,015,408.19
  5. Step 5: Solve for x
    x = 17,801,015,408.19/150,347.54
  6. Step 6: Final answer
    x = 118,399.12

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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.