Home / 154,536.96-213,139.20-100,838.40

Finding the Fourth Proportional to 154,536.96, 213,139.20 and 100,838.40

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Solution

The fourth proportional to 154,536.96, 213,139.20 and 100,838.40 is: 139,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,536.96 : 213,139.20 = 100,838.40 : x
  2. Step 2: Convert to fraction form
    154,536.96/213,139.20 = 100,838.40/x
  3. Step 3: Cross multiply
    154,536.96x = 213,139.20 × 100,838.40
  4. Step 4: Simplify right side
    154,536.96x = 21,492,615,905.28
  5. Step 5: Solve for x
    x = 21,492,615,905.28/154,536.96
  6. Step 6: Final answer
    x = 139,077.51

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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.