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Finding the Fourth Proportional to 152,140.65, 209,883.39 and 98,443.01

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Solution

The fourth proportional to 152,140.65, 209,883.39 and 98,443.01 is: 135,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,140.65 : 209,883.39 = 98,443.01 : x
  2. Step 2: Convert to fraction form
    152,140.65/209,883.39 = 98,443.01/x
  3. Step 3: Cross multiply
    152,140.65x = 209,883.39 × 98,443.01
  4. Step 4: Simplify right side
    152,140.65x = 20,661,551,611.19
  5. Step 5: Solve for x
    x = 20,661,551,611.19/152,140.65
  6. Step 6: Final answer
    x = 135,805.60

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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.