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Finding the Fourth Proportional to 181,051.70, 249,973.17 and 138,534.26

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Solution

The fourth proportional to 181,051.70, 249,973.17 and 138,534.26 is: 191,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,051.70 : 249,973.17 = 138,534.26 : x
  2. Step 2: Convert to fraction form
    181,051.70/249,973.17 = 138,534.26/x
  3. Step 3: Cross multiply
    181,051.70x = 249,973.17 × 138,534.26
  4. Step 4: Simplify right side
    181,051.70x = 34,629,848,125.80
  5. Step 5: Solve for x
    x = 34,629,848,125.80/181,051.70
  6. Step 6: Final answer
    x = 191,270.49

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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.