Home / 115,308.80-172,740.48-70,806.40

Finding the Fourth Proportional to 115,308.80, 172,740.48 and 70,806.40

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Solution

The fourth proportional to 115,308.80, 172,740.48 and 70,806.40 is: 106,072.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,308.80 : 172,740.48 = 70,806.40 : x
  2. Step 2: Convert to fraction form
    115,308.80/172,740.48 = 70,806.40/x
  3. Step 3: Cross multiply
    115,308.80x = 172,740.48 × 70,806.40
  4. Step 4: Simplify right side
    115,308.80x = 12,231,131,523.07
  5. Step 5: Solve for x
    x = 12,231,131,523.07/115,308.80
  6. Step 6: Final answer
    x = 106,072.84

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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.