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Finding the Fourth Proportional to 152,486.35, 210,439.59 and 84,501.90

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Solution

The fourth proportional to 152,486.35, 210,439.59 and 84,501.90 is: 116,617.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,486.35 : 210,439.59 = 84,501.90 : x
  2. Step 2: Convert to fraction form
    152,486.35/210,439.59 = 84,501.90/x
  3. Step 3: Cross multiply
    152,486.35x = 210,439.59 × 84,501.90
  4. Step 4: Simplify right side
    152,486.35x = 17,782,544,873.34
  5. Step 5: Solve for x
    x = 17,782,544,873.34/152,486.35
  6. Step 6: Final answer
    x = 116,617.29

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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.