Home / 143,767,528.20-215,431,852.14-85,360,190.40

Finding the Fourth Proportional to 143,767,528.20, 215,431,852.14 and 85,360,190.40

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Solution

The fourth proportional to 143,767,528.20, 215,431,852.14 and 85,360,190.40 is: 127,909,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,767,528.20 : 215,431,852.14 = 85,360,190.40 : x
  2. Step 2: Convert to fraction form
    143,767,528.20/215,431,852.14 = 85,360,190.40/x
  3. Step 3: Cross multiply
    143,767,528.20x = 215,431,852.14 × 85,360,190.40
  4. Step 4: Simplify right side
    143,767,528.20x = 18,389,303,916,895,048
  5. Step 5: Solve for x
    x = 18,389,303,916,895,048/143,767,528.20
  6. Step 6: Final answer
    x = 127,909,995.72

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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.