Home / 111,155.19-153,393.75-63,408.45

Finding the Fourth Proportional to 111,155.19, 153,393.75 and 63,408.45

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Solution

The fourth proportional to 111,155.19, 153,393.75 and 63,408.45 is: 87,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,155.19 : 153,393.75 = 63,408.45 : x
  2. Step 2: Convert to fraction form
    111,155.19/153,393.75 = 63,408.45/x
  3. Step 3: Cross multiply
    111,155.19x = 153,393.75 × 63,408.45
  4. Step 4: Simplify right side
    111,155.19x = 9,726,459,927.19
  5. Step 5: Solve for x
    x = 9,726,459,927.19/111,155.19
  6. Step 6: Final answer
    x = 87,503.43

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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.