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Finding the Fourth Proportional to 131,619.16, 197,428.74 and 61,547.68

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Solution

The fourth proportional to 131,619.16, 197,428.74 and 61,547.68 is: 92,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,619.16 : 197,428.74 = 61,547.68 : x
  2. Step 2: Convert to fraction form
    131,619.16/197,428.74 = 61,547.68/x
  3. Step 3: Cross multiply
    131,619.16x = 197,428.74 × 61,547.68
  4. Step 4: Simplify right side
    131,619.16x = 12,151,280,912.32
  5. Step 5: Solve for x
    x = 12,151,280,912.32/131,619.16
  6. Step 6: Final answer
    x = 92,321.52

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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.