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Finding the Fourth Proportional to 180,407.79, 248,956.62 and 99,838.71

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Solution

The fourth proportional to 180,407.79, 248,956.62 and 99,838.71 is: 137,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,407.79 : 248,956.62 = 99,838.71 : x
  2. Step 2: Convert to fraction form
    180,407.79/248,956.62 = 99,838.71/x
  3. Step 3: Cross multiply
    180,407.79x = 248,956.62 × 99,838.71
  4. Step 4: Simplify right side
    180,407.79x = 24,855,507,786.76
  5. Step 5: Solve for x
    x = 24,855,507,786.76/180,407.79
  6. Step 6: Final answer
    x = 137,774.03

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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.