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Finding the Fourth Proportional to 140,700.51, 210,996.92 and 69,598.74

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Solution

The fourth proportional to 140,700.51, 210,996.92 and 69,598.74 is: 104,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,700.51 : 210,996.92 = 69,598.74 : x
  2. Step 2: Convert to fraction form
    140,700.51/210,996.92 = 69,598.74/x
  3. Step 3: Cross multiply
    140,700.51x = 210,996.92 × 69,598.74
  4. Step 4: Simplify right side
    140,700.51x = 14,685,119,427.89
  5. Step 5: Solve for x
    x = 14,685,119,427.89/140,700.51
  6. Step 6: Final answer
    x = 104,371.47

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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.