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Finding the Fourth Proportional to 152,888.89, 210,987.95 and 84,907

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Solution

The fourth proportional to 152,888.89, 210,987.95 and 84,907 is: 117,172.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,888.89 : 210,987.95 = 84,907 : x
  2. Step 2: Convert to fraction form
    152,888.89/210,987.95 = 84,907/x
  3. Step 3: Cross multiply
    152,888.89x = 210,987.95 × 84,907
  4. Step 4: Simplify right side
    152,888.89x = 17,914,353,870.65
  5. Step 5: Solve for x
    x = 17,914,353,870.65/152,888.89
  6. Step 6: Final answer
    x = 117,172.37

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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.