Home / 121,022.29-181,502.61-85,814.33

Finding the Fourth Proportional to 121,022.29, 181,502.61 and 85,814.33

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Solution

The fourth proportional to 121,022.29, 181,502.61 and 85,814.33 is: 128,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,022.29 : 181,502.61 = 85,814.33 : x
  2. Step 2: Convert to fraction form
    121,022.29/181,502.61 = 85,814.33/x
  3. Step 3: Cross multiply
    121,022.29x = 181,502.61 × 85,814.33
  4. Step 4: Simplify right side
    121,022.29x = 15,575,523,533.82
  5. Step 5: Solve for x
    x = 15,575,523,533.82/121,022.29
  6. Step 6: Final answer
    x = 128,699.63

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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.