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Finding the Fourth Proportional to 155,699.51, 214,900.29 and 101,953.31

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Solution

The fourth proportional to 155,699.51, 214,900.29 and 101,953.31 is: 140,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,699.51 : 214,900.29 = 101,953.31 : x
  2. Step 2: Convert to fraction form
    155,699.51/214,900.29 = 101,953.31/x
  3. Step 3: Cross multiply
    155,699.51x = 214,900.29 × 101,953.31
  4. Step 4: Simplify right side
    155,699.51x = 21,909,795,885.46
  5. Step 5: Solve for x
    x = 21,909,795,885.46/155,699.51
  6. Step 6: Final answer
    x = 140,718.46

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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.