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Finding the Fourth Proportional to 147,172.18, 203,101.95 and 104,228.50

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Solution

The fourth proportional to 147,172.18, 203,101.95 and 104,228.50 is: 143,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,172.18 : 203,101.95 = 104,228.50 : x
  2. Step 2: Convert to fraction form
    147,172.18/203,101.95 = 104,228.50/x
  3. Step 3: Cross multiply
    147,172.18x = 203,101.95 × 104,228.50
  4. Step 4: Simplify right side
    147,172.18x = 21,169,011,595.58
  5. Step 5: Solve for x
    x = 21,169,011,595.58/147,172.18
  6. Step 6: Final answer
    x = 143,838.40

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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.