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Finding the Fourth Proportional to 153,983.60, 230,975.40 and 136,876.40

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Solution

The fourth proportional to 153,983.60, 230,975.40 and 136,876.40 is: 205,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,983.60 : 230,975.40 = 136,876.40 : x
  2. Step 2: Convert to fraction form
    153,983.60/230,975.40 = 136,876.40/x
  3. Step 3: Cross multiply
    153,983.60x = 230,975.40 × 136,876.40
  4. Step 4: Simplify right side
    153,983.60x = 31,615,081,240.56
  5. Step 5: Solve for x
    x = 31,615,081,240.56/153,983.60
  6. Step 6: Final answer
    x = 205,314.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.