Home / 258,150.34-387,138.18-98,188.30

Finding the Fourth Proportional to 258,150.34, 387,138.18 and 98,188.30

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Solution

The fourth proportional to 258,150.34, 387,138.18 and 98,188.30 is: 147,249.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,150.34 : 387,138.18 = 98,188.30 : x
  2. Step 2: Convert to fraction form
    258,150.34/387,138.18 = 98,188.30/x
  3. Step 3: Cross multiply
    258,150.34x = 387,138.18 × 98,188.30
  4. Step 4: Simplify right side
    258,150.34x = 38,012,440,611.42
  5. Step 5: Solve for x
    x = 38,012,440,611.42/258,150.34
  6. Step 6: Final answer
    x = 147,249.24

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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.