Home / 153,192.86-211,403.09-85,208.36

Finding the Fourth Proportional to 153,192.86, 211,403.09 and 85,208.36

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Solution

The fourth proportional to 153,192.86, 211,403.09 and 85,208.36 is: 117,585.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,192.86 : 211,403.09 = 85,208.36 : x
  2. Step 2: Convert to fraction form
    153,192.86/211,403.09 = 85,208.36/x
  3. Step 3: Cross multiply
    153,192.86x = 211,403.09 × 85,208.36
  4. Step 4: Simplify right side
    153,192.86x = 18,013,309,114.78
  5. Step 5: Solve for x
    x = 18,013,309,114.78/153,192.86
  6. Step 6: Final answer
    x = 117,585.83

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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.