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Finding the Fourth Proportional to 138,875.63, 191,595.51 and 102,664.01

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Solution

The fourth proportional to 138,875.63, 191,595.51 and 102,664.01 is: 141,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,875.63 : 191,595.51 = 102,664.01 : x
  2. Step 2: Convert to fraction form
    138,875.63/191,595.51 = 102,664.01/x
  3. Step 3: Cross multiply
    138,875.63x = 191,595.51 × 102,664.01
  4. Step 4: Simplify right side
    138,875.63x = 19,669,963,833.58
  5. Step 5: Solve for x
    x = 19,669,963,833.58/138,875.63
  6. Step 6: Final answer
    x = 141,637.27

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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.