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Finding the Fourth Proportional to 98,808.78, 136,356.06 and 54,096.78

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Solution

The fourth proportional to 98,808.78, 136,356.06 and 54,096.78 is: 74,653.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,808.78 : 136,356.06 = 54,096.78 : x
  2. Step 2: Convert to fraction form
    98,808.78/136,356.06 = 54,096.78/x
  3. Step 3: Cross multiply
    98,808.78x = 136,356.06 × 54,096.78
  4. Step 4: Simplify right side
    98,808.78x = 7,376,423,779.49
  5. Step 5: Solve for x
    x = 7,376,423,779.49/98,808.78
  6. Step 6: Final answer
    x = 74,653.53

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1.5x scale

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.