Home / 115,611.40-159,543.18-64,624.12

Finding the Fourth Proportional to 115,611.40, 159,543.18 and 64,624.12

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Solution

The fourth proportional to 115,611.40, 159,543.18 and 64,624.12 is: 89,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,611.40 : 159,543.18 = 64,624.12 : x
  2. Step 2: Convert to fraction form
    115,611.40/159,543.18 = 64,624.12/x
  3. Step 3: Cross multiply
    115,611.40x = 159,543.18 × 64,624.12
  4. Step 4: Simplify right side
    115,611.40x = 10,310,337,609.50
  5. Step 5: Solve for x
    x = 10,310,337,609.50/115,611.40
  6. Step 6: Final answer
    x = 89,180.98

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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.