Home / 121,328,763.40-181,993,145.10-115,110,903.70

Finding the Fourth Proportional to 121,328,763.40, 181,993,145.10 and 115,110,903.70

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Solution

The fourth proportional to 121,328,763.40, 181,993,145.10 and 115,110,903.70 is: 172,666,355.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,328,763.40 : 181,993,145.10 = 115,110,903.70 : x
  2. Step 2: Convert to fraction form
    121,328,763.40/181,993,145.10 = 115,110,903.70/x
  3. Step 3: Cross multiply
    121,328,763.40x = 181,993,145.10 × 115,110,903.70
  4. Step 4: Simplify right side
    121,328,763.40x = 20,949,395,399,666,228
  5. Step 5: Solve for x
    x = 20,949,395,399,666,228/121,328,763.40
  6. Step 6: Final answer
    x = 172,666,355.55

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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.