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Finding the Fourth Proportional to 151,960.66, 209,699.28 and 83,980.19

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Solution

The fourth proportional to 151,960.66, 209,699.28 and 83,980.19 is: 115,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,960.66 : 209,699.28 = 83,980.19 : x
  2. Step 2: Convert to fraction form
    151,960.66/209,699.28 = 83,980.19/x
  3. Step 3: Cross multiply
    151,960.66x = 209,699.28 × 83,980.19
  4. Step 4: Simplify right side
    151,960.66x = 17,610,585,901.51
  5. Step 5: Solve for x
    x = 17,610,585,901.51/151,960.66
  6. Step 6: Final answer
    x = 115,889.11

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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.