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Finding the Fourth Proportional to 111,510.48, 153,879.84 and 61,210.56

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Solution

The fourth proportional to 111,510.48, 153,879.84 and 61,210.56 is: 84,468.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,510.48 : 153,879.84 = 61,210.56 : x
  2. Step 2: Convert to fraction form
    111,510.48/153,879.84 = 61,210.56/x
  3. Step 3: Cross multiply
    111,510.48x = 153,879.84 × 61,210.56
  4. Step 4: Simplify right side
    111,510.48x = 9,419,071,179.11
  5. Step 5: Solve for x
    x = 9,419,071,179.11/111,510.48
  6. Step 6: Final answer
    x = 84,468.04

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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.