Home / 209,953,189.80-314,929,784.70-145,120,012.20

Finding the Fourth Proportional to 209,953,189.80, 314,929,784.70 and 145,120,012.20

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Solution

The fourth proportional to 209,953,189.80, 314,929,784.70 and 145,120,012.20 is: 217,680,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,189.80 : 314,929,784.70 = 145,120,012.20 : x
  2. Step 2: Convert to fraction form
    209,953,189.80/314,929,784.70 = 145,120,012.20/x
  3. Step 3: Cross multiply
    209,953,189.80x = 314,929,784.70 × 145,120,012.20
  4. Step 4: Simplify right side
    209,953,189.80x = 45,702,614,197,807,368
  5. Step 5: Solve for x
    x = 45,702,614,197,807,368/209,953,189.80
  6. Step 6: Final answer
    x = 217,680,018.30

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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.