Home / 210,947,446.15-291,079,869.33-121,642,688.76

Finding the Fourth Proportional to 210,947,446.15, 291,079,869.33 and 121,642,688.76

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Solution

The fourth proportional to 210,947,446.15, 291,079,869.33 and 121,642,688.76 is: 167,850,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,947,446.15 : 291,079,869.33 = 121,642,688.76 : x
  2. Step 2: Convert to fraction form
    210,947,446.15/291,079,869.33 = 121,642,688.76/x
  3. Step 3: Cross multiply
    210,947,446.15x = 291,079,869.33 × 121,642,688.76
  4. Step 4: Simplify right side
    210,947,446.15x = 35,407,737,948,575,268
  5. Step 5: Solve for x
    x = 35,407,737,948,575,268/210,947,446.15
  6. Step 6: Final answer
    x = 167,850,991.30

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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.