Home / 121,106.10-181,637.55-76,653.30

Finding the Fourth Proportional to 121,106.10, 181,637.55 and 76,653.30

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Solution

The fourth proportional to 121,106.10, 181,637.55 and 76,653.30 is: 114,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,106.10 : 181,637.55 = 76,653.30 : x
  2. Step 2: Convert to fraction form
    121,106.10/181,637.55 = 76,653.30/x
  3. Step 3: Cross multiply
    121,106.10x = 181,637.55 × 76,653.30
  4. Step 4: Simplify right side
    121,106.10x = 13,923,117,611.42
  5. Step 5: Solve for x
    x = 13,923,117,611.42/121,106.10
  6. Step 6: Final answer
    x = 114,966.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.