Home / 111,604.16-154,021.28-61,303.68

Finding the Fourth Proportional to 111,604.16, 154,021.28 and 61,303.68

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Solution

The fourth proportional to 111,604.16, 154,021.28 and 61,303.68 is: 84,603.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,604.16 : 154,021.28 = 61,303.68 : x
  2. Step 2: Convert to fraction form
    111,604.16/154,021.28 = 61,303.68/x
  3. Step 3: Cross multiply
    111,604.16x = 154,021.28 × 61,303.68
  4. Step 4: Simplify right side
    111,604.16x = 9,442,071,262.31
  5. Step 5: Solve for x
    x = 9,442,071,262.31/111,604.16
  6. Step 6: Final answer
    x = 84,603.22

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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.