Home / 111,441.20-153,790.14-61,140.20

Finding the Fourth Proportional to 111,441.20, 153,790.14 and 61,140.20

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Solution

The fourth proportional to 111,441.20, 153,790.14 and 61,140.20 is: 84,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,441.20 : 153,790.14 = 61,140.20 : x
  2. Step 2: Convert to fraction form
    111,441.20/153,790.14 = 61,140.20/x
  3. Step 3: Cross multiply
    111,441.20x = 153,790.14 × 61,140.20
  4. Step 4: Simplify right side
    111,441.20x = 9,402,759,917.63
  5. Step 5: Solve for x
    x = 9,402,759,917.63/111,441.20
  6. Step 6: Final answer
    x = 84,374.18

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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.