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Finding the Fourth Proportional to 111,560, 153,953.88 and 61,260.08

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Solution

The fourth proportional to 111,560, 153,953.88 and 61,260.08 is: 84,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,560 : 153,953.88 = 61,260.08 : x
  2. Step 2: Convert to fraction form
    111,560/153,953.88 = 61,260.08/x
  3. Step 3: Cross multiply
    111,560x = 153,953.88 × 61,260.08
  4. Step 4: Simplify right side
    111,560x = 9,431,227,005.11
  5. Step 5: Solve for x
    x = 9,431,227,005.11/111,560
  6. Step 6: Final answer
    x = 84,539.50

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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.