Home / 111,389.19-153,725.21-63,641.51

Finding the Fourth Proportional to 111,389.19, 153,725.21 and 63,641.51

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Solution

The fourth proportional to 111,389.19, 153,725.21 and 63,641.51 is: 87,829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,389.19 : 153,725.21 = 63,641.51 : x
  2. Step 2: Convert to fraction form
    111,389.19/153,725.21 = 63,641.51/x
  3. Step 3: Cross multiply
    111,389.19x = 153,725.21 × 63,641.51
  4. Step 4: Simplify right side
    111,389.19x = 9,783,304,217.76
  5. Step 5: Solve for x
    x = 9,783,304,217.76/111,389.19
  6. Step 6: Final answer
    x = 87,829.93

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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.