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Finding the Fourth Proportional to 147,293.60, 203,288.26 and 86,870.90

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Solution

The fourth proportional to 147,293.60, 203,288.26 and 86,870.90 is: 119,895.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,293.60 : 203,288.26 = 86,870.90 : x
  2. Step 2: Convert to fraction form
    147,293.60/203,288.26 = 86,870.90/x
  3. Step 3: Cross multiply
    147,293.60x = 203,288.26 × 86,870.90
  4. Step 4: Simplify right side
    147,293.60x = 17,659,834,105.63
  5. Step 5: Solve for x
    x = 17,659,834,105.63/147,293.60
  6. Step 6: Final answer
    x = 119,895.46

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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.