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Finding the Fourth Proportional to 145,853.10, 218,763.45 and 119,511.90

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Solution

The fourth proportional to 145,853.10, 218,763.45 and 119,511.90 is: 179,254.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,853.10 : 218,763.45 = 119,511.90 : x
  2. Step 2: Convert to fraction form
    145,853.10/218,763.45 = 119,511.90/x
  3. Step 3: Cross multiply
    145,853.10x = 218,763.45 × 119,511.90
  4. Step 4: Simplify right side
    145,853.10x = 26,144,835,560.06
  5. Step 5: Solve for x
    x = 26,144,835,560.06/145,853.10
  6. Step 6: Final answer
    x = 179,254.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.