Home / 115,430.40-173,145.60-70,912.80

Finding the Fourth Proportional to 115,430.40, 173,145.60 and 70,912.80

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Solution

The fourth proportional to 115,430.40, 173,145.60 and 70,912.80 is: 106,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.40 : 173,145.60 = 70,912.80 : x
  2. Step 2: Convert to fraction form
    115,430.40/173,145.60 = 70,912.80/x
  3. Step 3: Cross multiply
    115,430.40x = 173,145.60 × 70,912.80
  4. Step 4: Simplify right side
    115,430.40x = 12,278,239,303.68
  5. Step 5: Solve for x
    x = 12,278,239,303.68/115,430.40
  6. Step 6: Final answer
    x = 106,369.20

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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.