Home / 101,087.19-139,509.72-58,072.68

Finding the Fourth Proportional to 101,087.19, 139,509.72 and 58,072.68

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Solution

The fourth proportional to 101,087.19, 139,509.72 and 58,072.68 is: 80,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,087.19 : 139,509.72 = 58,072.68 : x
  2. Step 2: Convert to fraction form
    101,087.19/139,509.72 = 58,072.68/x
  3. Step 3: Cross multiply
    101,087.19x = 139,509.72 × 58,072.68
  4. Step 4: Simplify right side
    101,087.19x = 8,101,703,326.45
  5. Step 5: Solve for x
    x = 8,101,703,326.45/101,087.19
  6. Step 6: Final answer
    x = 80,145.70

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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.