Home / 126,015,388.80-189,023,083.20-112,623,075.60

Finding the Fourth Proportional to 126,015,388.80, 189,023,083.20 and 112,623,075.60

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Solution

The fourth proportional to 126,015,388.80, 189,023,083.20 and 112,623,075.60 is: 168,934,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,015,388.80 : 189,023,083.20 = 112,623,075.60 : x
  2. Step 2: Convert to fraction form
    126,015,388.80/189,023,083.20 = 112,623,075.60/x
  3. Step 3: Cross multiply
    126,015,388.80x = 189,023,083.20 × 112,623,075.60
  4. Step 4: Simplify right side
    126,015,388.80x = 21,288,360,989,378,688
  5. Step 5: Solve for x
    x = 21,288,360,989,378,688/126,015,388.80
  6. Step 6: Final answer
    x = 168,934,613.40

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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.