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Finding the Fourth Proportional to 121,510.10, 170,289.10 and 121,510.10

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Solution

The fourth proportional to 121,510.10, 170,289.10 and 121,510.10 is: 170,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,510.10 : 170,289.10 = 121,510.10 : x
  2. Step 2: Convert to fraction form
    121,510.10/170,289.10 = 121,510.10/x
  3. Step 3: Cross multiply
    121,510.10x = 170,289.10 × 121,510.10
  4. Step 4: Simplify right side
    121,510.10x = 20,691,845,569.91
  5. Step 5: Solve for x
    x = 20,691,845,569.91/121,510.10
  6. Step 6: Final answer
    x = 170,289.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.