Home / 158,416.37-218,606.23-90,430.64

Finding the Fourth Proportional to 158,416.37, 218,606.23 and 90,430.64

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Solution

The fourth proportional to 158,416.37, 218,606.23 and 90,430.64 is: 124,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,416.37 : 218,606.23 = 90,430.64 : x
  2. Step 2: Convert to fraction form
    158,416.37/218,606.23 = 90,430.64/x
  3. Step 3: Cross multiply
    158,416.37x = 218,606.23 × 90,430.64
  4. Step 4: Simplify right side
    158,416.37x = 19,768,701,286.89
  5. Step 5: Solve for x
    x = 19,768,701,286.89/158,416.37
  6. Step 6: Final answer
    x = 124,789.51

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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.