Home / 158,211.37-218,320.72-90,231.24

Finding the Fourth Proportional to 158,211.37, 218,320.72 and 90,231.24

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Solution

The fourth proportional to 158,211.37, 218,320.72 and 90,231.24 is: 124,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,211.37 : 218,320.72 = 90,231.24 : x
  2. Step 2: Convert to fraction form
    158,211.37/218,320.72 = 90,231.24/x
  3. Step 3: Cross multiply
    158,211.37x = 218,320.72 × 90,231.24
  4. Step 4: Simplify right side
    158,211.37x = 19,699,349,283.29
  5. Step 5: Solve for x
    x = 19,699,349,283.29/158,211.37
  6. Step 6: Final answer
    x = 124,512.85

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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.