Home / 158,426.63-218,593.28-90,421.86

Finding the Fourth Proportional to 158,426.63, 218,593.28 and 90,421.86

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Solution

The fourth proportional to 158,426.63, 218,593.28 and 90,421.86 is: 124,761.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,426.63 : 218,593.28 = 90,421.86 : x
  2. Step 2: Convert to fraction form
    158,426.63/218,593.28 = 90,421.86/x
  3. Step 3: Cross multiply
    158,426.63x = 218,593.28 × 90,421.86
  4. Step 4: Simplify right side
    158,426.63x = 19,765,610,508.99
  5. Step 5: Solve for x
    x = 19,765,610,508.99/158,426.63
  6. Step 6: Final answer
    x = 124,761.92

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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.