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Finding the Fourth Proportional to 154,954.56, 213,802.40 and 91,298.24

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Solution

The fourth proportional to 154,954.56, 213,802.40 and 91,298.24 is: 125,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,954.56 : 213,802.40 = 91,298.24 : x
  2. Step 2: Convert to fraction form
    154,954.56/213,802.40 = 91,298.24/x
  3. Step 3: Cross multiply
    154,954.56x = 213,802.40 × 91,298.24
  4. Step 4: Simplify right side
    154,954.56x = 19,519,782,827.78
  5. Step 5: Solve for x
    x = 19,519,782,827.78/154,954.56
  6. Step 6: Final answer
    x = 125,971.01

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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.