Home / 158,051.21-218,108.57-90,072.23

Finding the Fourth Proportional to 158,051.21, 218,108.57 and 90,072.23

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Solution

The fourth proportional to 158,051.21, 218,108.57 and 90,072.23 is: 124,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,051.21 : 218,108.57 = 90,072.23 : x
  2. Step 2: Convert to fraction form
    158,051.21/218,108.57 = 90,072.23/x
  3. Step 3: Cross multiply
    158,051.21x = 218,108.57 × 90,072.23
  4. Step 4: Simplify right side
    158,051.21x = 19,645,523,741.11
  5. Step 5: Solve for x
    x = 19,645,523,741.11/158,051.21
  6. Step 6: Final answer
    x = 124,298.47

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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.