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Finding the Fourth Proportional to 152,615.78, 210,603.93 and 84,635.54

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Solution

The fourth proportional to 152,615.78, 210,603.93 and 84,635.54 is: 116,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,615.78 : 210,603.93 = 84,635.54 : x
  2. Step 2: Convert to fraction form
    152,615.78/210,603.93 = 84,635.54/x
  3. Step 3: Cross multiply
    152,615.78x = 210,603.93 × 84,635.54
  4. Step 4: Simplify right side
    152,615.78x = 17,824,577,341.67
  5. Step 5: Solve for x
    x = 17,824,577,341.67/152,615.78
  6. Step 6: Final answer
    x = 116,793.80

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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.