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Finding the Fourth Proportional to 111,271, 153,554 and 60,971.08

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Solution

The fourth proportional to 111,271, 153,554 and 60,971.08 is: 84,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,271 : 153,554 = 60,971.08 : x
  2. Step 2: Convert to fraction form
    111,271/153,554 = 60,971.08/x
  3. Step 3: Cross multiply
    111,271x = 153,554 × 60,971.08
  4. Step 4: Simplify right side
    111,271x = 9,362,353,218.32
  5. Step 5: Solve for x
    x = 9,362,353,218.32/111,271
  6. Step 6: Final answer
    x = 84,140.10

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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.