Home / 111,135.16-153,438.06-99,177.94

Finding the Fourth Proportional to 111,135.16, 153,438.06 and 99,177.94

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Solution

The fourth proportional to 111,135.16, 153,438.06 and 99,177.94 is: 136,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,135.16 : 153,438.06 = 99,177.94 : x
  2. Step 2: Convert to fraction form
    111,135.16/153,438.06 = 99,177.94/x
  3. Step 3: Cross multiply
    111,135.16x = 153,438.06 × 99,177.94
  4. Step 4: Simplify right side
    111,135.16x = 15,217,670,708.40
  5. Step 5: Solve for x
    x = 15,217,670,708.40/111,135.16
  6. Step 6: Final answer
    x = 136,929.40

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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.