Home / 162,129.36-223,715.38-90,507.81

Finding the Fourth Proportional to 162,129.36, 223,715.38 and 90,507.81

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Solution

The fourth proportional to 162,129.36, 223,715.38 and 90,507.81 is: 124,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,129.36 : 223,715.38 = 90,507.81 : x
  2. Step 2: Convert to fraction form
    162,129.36/223,715.38 = 90,507.81/x
  3. Step 3: Cross multiply
    162,129.36x = 223,715.38 × 90,507.81
  4. Step 4: Simplify right side
    162,129.36x = 20,247,989,107.12
  5. Step 5: Solve for x
    x = 20,247,989,107.12/162,129.36
  6. Step 6: Final answer
    x = 124,887.86

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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.