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Finding the Fourth Proportional to 149,988.57, 206,987.49 and 89,547.94

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Solution

The fourth proportional to 149,988.57, 206,987.49 and 89,547.94 is: 123,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,988.57 : 206,987.49 = 89,547.94 : x
  2. Step 2: Convert to fraction form
    149,988.57/206,987.49 = 89,547.94/x
  3. Step 3: Cross multiply
    149,988.57x = 206,987.49 × 89,547.94
  4. Step 4: Simplify right side
    149,988.57x = 18,535,301,852.59
  5. Step 5: Solve for x
    x = 18,535,301,852.59/149,988.57
  6. Step 6: Final answer
    x = 123,578.10

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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.