Home / 153,231.86-211,485.12-89,557.22

Finding the Fourth Proportional to 153,231.86, 211,485.12 and 89,557.22

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Solution

The fourth proportional to 153,231.86, 211,485.12 and 89,557.22 is: 123,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,231.86 : 211,485.12 = 89,557.22 : x
  2. Step 2: Convert to fraction form
    153,231.86/211,485.12 = 89,557.22/x
  3. Step 3: Cross multiply
    153,231.86x = 211,485.12 × 89,557.22
  4. Step 4: Simplify right side
    153,231.86x = 18,940,019,418.57
  5. Step 5: Solve for x
    x = 18,940,019,418.57/153,231.86
  6. Step 6: Final answer
    x = 123,603.66

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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.