Home / 151,720.36-208,812.32-111,370.21

Finding the Fourth Proportional to 151,720.36, 208,812.32 and 111,370.21

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Solution

The fourth proportional to 151,720.36, 208,812.32 and 111,370.21 is: 153,278.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,720.36 : 208,812.32 = 111,370.21 : x
  2. Step 2: Convert to fraction form
    151,720.36/208,812.32 = 111,370.21/x
  3. Step 3: Cross multiply
    151,720.36x = 208,812.32 × 111,370.21
  4. Step 4: Simplify right side
    151,720.36x = 23,255,470,884.93
  5. Step 5: Solve for x
    x = 23,255,470,884.93/151,720.36
  6. Step 6: Final answer
    x = 153,278.52

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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.