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Finding the Fourth Proportional to 171,430.63, 236,495.50 and 111,021.13

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Solution

The fourth proportional to 171,430.63, 236,495.50 and 111,021.13 is: 153,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,430.63 : 236,495.50 = 111,021.13 : x
  2. Step 2: Convert to fraction form
    171,430.63/236,495.50 = 111,021.13/x
  3. Step 3: Cross multiply
    171,430.63x = 236,495.50 × 111,021.13
  4. Step 4: Simplify right side
    171,430.63x = 26,255,997,667.98
  5. Step 5: Solve for x
    x = 26,255,997,667.98/171,430.63
  6. Step 6: Final answer
    x = 153,158.15

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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.