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Finding the Fourth Proportional to 140,583.70, 210,875.64 and 57,477.70

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Solution

The fourth proportional to 140,583.70, 210,875.64 and 57,477.70 is: 86,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,583.70 : 210,875.64 = 57,477.70 : x
  2. Step 2: Convert to fraction form
    140,583.70/210,875.64 = 57,477.70/x
  3. Step 3: Cross multiply
    140,583.70x = 210,875.64 × 57,477.70
  4. Step 4: Simplify right side
    140,583.70x = 12,120,646,773.23
  5. Step 5: Solve for x
    x = 12,120,646,773.23/140,583.70
  6. Step 6: Final answer
    x = 86,216.59

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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.