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Finding the Fourth Proportional to 98,937, 136,541.70 and 54,233.64

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Solution

The fourth proportional to 98,937, 136,541.70 and 54,233.64 is: 74,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,937 : 136,541.70 = 54,233.64 : x
  2. Step 2: Convert to fraction form
    98,937/136,541.70 = 54,233.64/x
  3. Step 3: Cross multiply
    98,937x = 136,541.70 × 54,233.64
  4. Step 4: Simplify right side
    98,937x = 7,405,153,402.79
  5. Step 5: Solve for x
    x = 7,405,153,402.79/98,937
  6. Step 6: Final answer
    x = 74,847.16

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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.