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Finding the Fourth Proportional to 162,742.50, 244,113.80 and 78,486.98

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Solution

The fourth proportional to 162,742.50, 244,113.80 and 78,486.98 is: 117,730.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,742.50 : 244,113.80 = 78,486.98 : x
  2. Step 2: Convert to fraction form
    162,742.50/244,113.80 = 78,486.98/x
  3. Step 3: Cross multiply
    162,742.50x = 244,113.80 × 78,486.98
  4. Step 4: Simplify right side
    162,742.50x = 19,159,753,325.32
  5. Step 5: Solve for x
    x = 19,159,753,325.32/162,742.50
  6. Step 6: Final answer
    x = 117,730.48

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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.