Home / 158,125.36-218,214.70-86,503.84

Finding the Fourth Proportional to 158,125.36, 218,214.70 and 86,503.84

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Solution

The fourth proportional to 158,125.36, 218,214.70 and 86,503.84 is: 119,376.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,125.36 : 218,214.70 = 86,503.84 : x
  2. Step 2: Convert to fraction form
    158,125.36/218,214.70 = 86,503.84/x
  3. Step 3: Cross multiply
    158,125.36x = 218,214.70 × 86,503.84
  4. Step 4: Simplify right side
    158,125.36x = 18,876,409,494.45
  5. Step 5: Solve for x
    x = 18,876,409,494.45/158,125.36
  6. Step 6: Final answer
    x = 119,376.23

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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.