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Finding the Fourth Proportional to 140,547.60, 210,936.60 and 135,939.60

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Solution

The fourth proportional to 140,547.60, 210,936.60 and 135,939.60 is: 204,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,547.60 : 210,936.60 = 135,939.60 : x
  2. Step 2: Convert to fraction form
    140,547.60/210,936.60 = 135,939.60/x
  3. Step 3: Cross multiply
    140,547.60x = 210,936.60 × 135,939.60
  4. Step 4: Simplify right side
    140,547.60x = 28,674,637,029.36
  5. Step 5: Solve for x
    x = 28,674,637,029.36/140,547.60
  6. Step 6: Final answer
    x = 204,020.82

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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.