Home / 121,938.65-183,821.93-113,810.30

Finding the Fourth Proportional to 121,938.65, 183,821.93 and 113,810.30

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Solution

The fourth proportional to 121,938.65, 183,821.93 and 113,810.30 is: 171,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,938.65 : 183,821.93 = 113,810.30 : x
  2. Step 2: Convert to fraction form
    121,938.65/183,821.93 = 113,810.30/x
  3. Step 3: Cross multiply
    121,938.65x = 183,821.93 × 113,810.30
  4. Step 4: Simplify right side
    121,938.65x = 20,920,828,999.88
  5. Step 5: Solve for x
    x = 20,920,828,999.88/121,938.65
  6. Step 6: Final answer
    x = 171,568.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.