Home / 212,666,189.16-293,533,941.78-138,511,531.56

Finding the Fourth Proportional to 212,666,189.16, 293,533,941.78 and 138,511,531.56

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Solution

The fourth proportional to 212,666,189.16, 293,533,941.78 and 138,511,531.56 is: 191,181,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,666,189.16 : 293,533,941.78 = 138,511,531.56 : x
  2. Step 2: Convert to fraction form
    212,666,189.16/293,533,941.78 = 138,511,531.56/x
  3. Step 3: Cross multiply
    212,666,189.16x = 293,533,941.78 × 138,511,531.56
  4. Step 4: Simplify right side
    212,666,189.16x = 40,657,835,840,791,672
  5. Step 5: Solve for x
    x = 40,657,835,840,791,672/212,666,189.16
  6. Step 6: Final answer
    x = 191,181,475.54

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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.