Home / 151,690.19-209,331.03-83,707.76

Finding the Fourth Proportional to 151,690.19, 209,331.03 and 83,707.76

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Solution

The fourth proportional to 151,690.19, 209,331.03 and 83,707.76 is: 115,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,690.19 : 209,331.03 = 83,707.76 : x
  2. Step 2: Convert to fraction form
    151,690.19/209,331.03 = 83,707.76/x
  3. Step 3: Cross multiply
    151,690.19x = 209,331.03 × 83,707.76
  4. Step 4: Simplify right side
    151,690.19x = 17,522,632,457.02
  5. Step 5: Solve for x
    x = 17,522,632,457.02/151,690.19
  6. Step 6: Final answer
    x = 115,515.93

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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.