Home / 111,579.75-153,981.27-61,278.75

Finding the Fourth Proportional to 111,579.75, 153,981.27 and 61,278.75

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Solution

The fourth proportional to 111,579.75, 153,981.27 and 61,278.75 is: 84,565.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.75 : 153,981.27 = 61,278.75 : x
  2. Step 2: Convert to fraction form
    111,579.75/153,981.27 = 61,278.75/x
  3. Step 3: Cross multiply
    111,579.75x = 153,981.27 × 61,278.75
  4. Step 4: Simplify right side
    111,579.75x = 9,435,779,749.01
  5. Step 5: Solve for x
    x = 9,435,779,749.01/111,579.75
  6. Step 6: Final answer
    x = 84,565.34

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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.