Home / 158,415.37-218,604.86-90,429.64

Finding the Fourth Proportional to 158,415.37, 218,604.86 and 90,429.64

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Solution

The fourth proportional to 158,415.37, 218,604.86 and 90,429.64 is: 124,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,415.37 : 218,604.86 = 90,429.64 : x
  2. Step 2: Convert to fraction form
    158,415.37/218,604.86 = 90,429.64/x
  3. Step 3: Cross multiply
    158,415.37x = 218,604.86 × 90,429.64
  4. Step 4: Simplify right side
    158,415.37x = 19,768,358,339.90
  5. Step 5: Solve for x
    x = 19,768,358,339.90/158,415.37
  6. Step 6: Final answer
    x = 124,788.13

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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.