Home / 158,669.06-218,982.69-90,688.91

Finding the Fourth Proportional to 158,669.06, 218,982.69 and 90,688.91

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Solution

The fourth proportional to 158,669.06, 218,982.69 and 90,688.91 is: 125,161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,669.06 : 218,982.69 = 90,688.91 : x
  2. Step 2: Convert to fraction form
    158,669.06/218,982.69 = 90,688.91/x
  3. Step 3: Cross multiply
    158,669.06x = 218,982.69 × 90,688.91
  4. Step 4: Simplify right side
    158,669.06x = 19,859,300,370.05
  5. Step 5: Solve for x
    x = 19,859,300,370.05/158,669.06
  6. Step 6: Final answer
    x = 125,161.77

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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.