Home / 161,750.37-223,212.49-90,128.86

Finding the Fourth Proportional to 161,750.37, 223,212.49 and 90,128.86

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Solution

The fourth proportional to 161,750.37, 223,212.49 and 90,128.86 is: 124,376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,750.37 : 223,212.49 = 90,128.86 : x
  2. Step 2: Convert to fraction form
    161,750.37/223,212.49 = 90,128.86/x
  3. Step 3: Cross multiply
    161,750.37x = 223,212.49 × 90,128.86
  4. Step 4: Simplify right side
    161,750.37x = 20,117,887,261.46
  5. Step 5: Solve for x
    x = 20,117,887,261.46/161,750.37
  6. Step 6: Final answer
    x = 124,376.14

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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.