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Finding the Fourth Proportional to 152,790.50, 210,851.16 and 84,805.04

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Solution

The fourth proportional to 152,790.50, 210,851.16 and 84,805.04 is: 117,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,790.50 : 210,851.16 = 84,805.04 : x
  2. Step 2: Convert to fraction form
    152,790.50/210,851.16 = 84,805.04/x
  3. Step 3: Cross multiply
    152,790.50x = 210,851.16 × 84,805.04
  4. Step 4: Simplify right side
    152,790.50x = 17,881,241,057.85
  5. Step 5: Solve for x
    x = 17,881,241,057.85/152,790.50
  6. Step 6: Final answer
    x = 117,031.11

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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.