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Finding the Fourth Proportional to 113,227.70, 156,254.55 and 64,830.38

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Solution

The fourth proportional to 113,227.70, 156,254.55 and 64,830.38 is: 89,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,227.70 : 156,254.55 = 64,830.38 : x
  2. Step 2: Convert to fraction form
    113,227.70/156,254.55 = 64,830.38/x
  3. Step 3: Cross multiply
    113,227.70x = 156,254.55 × 64,830.38
  4. Step 4: Simplify right side
    113,227.70x = 10,130,041,071.96
  5. Step 5: Solve for x
    x = 10,130,041,071.96/113,227.70
  6. Step 6: Final answer
    x = 89,466.11

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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.