Home / 155,615,075.76-214,749,471.60-85,052,107.20

Finding the Fourth Proportional to 155,615,075.76, 214,749,471.60 and 85,052,107.20

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Solution

The fourth proportional to 155,615,075.76, 214,749,471.60 and 85,052,107.20 is: 117,372,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,615,075.76 : 214,749,471.60 = 85,052,107.20 : x
  2. Step 2: Convert to fraction form
    155,615,075.76/214,749,471.60 = 85,052,107.20/x
  3. Step 3: Cross multiply
    155,615,075.76x = 214,749,471.60 × 85,052,107.20
  4. Step 4: Simplify right side
    155,615,075.76x = 18,264,895,079,666,556
  5. Step 5: Solve for x
    x = 18,264,895,079,666,556/155,615,075.76
  6. Step 6: Final answer
    x = 117,372,272.52

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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.