Home / 115,319.16-172,852.36-45,121.32

Finding the Fourth Proportional to 115,319.16, 172,852.36 and 45,121.32

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Solution

The fourth proportional to 115,319.16, 172,852.36 and 45,121.32 is: 67,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,319.16 : 172,852.36 = 45,121.32 : x
  2. Step 2: Convert to fraction form
    115,319.16/172,852.36 = 45,121.32/x
  3. Step 3: Cross multiply
    115,319.16x = 172,852.36 × 45,121.32
  4. Step 4: Simplify right side
    115,319.16x = 7,799,326,648.32
  5. Step 5: Solve for x
    x = 7,799,326,648.32/115,319.16
  6. Step 6: Final answer
    x = 67,632.53

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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.