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Finding the Fourth Proportional to 151,990.26, 209,746.31 and 84,006.51

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Solution

The fourth proportional to 151,990.26, 209,746.31 and 84,006.51 is: 115,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,990.26 : 209,746.31 = 84,006.51 : x
  2. Step 2: Convert to fraction form
    151,990.26/209,746.31 = 84,006.51/x
  3. Step 3: Cross multiply
    151,990.26x = 209,746.31 × 84,006.51
  4. Step 4: Simplify right side
    151,990.26x = 17,620,055,068.45
  5. Step 5: Solve for x
    x = 17,620,055,068.45/151,990.26
  6. Step 6: Final answer
    x = 115,928.84

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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.