Home / 219,681.88-303,193.38-139,116.76

Finding the Fourth Proportional to 219,681.88, 303,193.38 and 139,116.76

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Solution

The fourth proportional to 219,681.88, 303,193.38 and 139,116.76 is: 192,001.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,681.88 : 303,193.38 = 139,116.76 : x
  2. Step 2: Convert to fraction form
    219,681.88/303,193.38 = 139,116.76/x
  3. Step 3: Cross multiply
    219,681.88x = 303,193.38 × 139,116.76
  4. Step 4: Simplify right side
    219,681.88x = 42,179,280,679.05
  5. Step 5: Solve for x
    x = 42,179,280,679.05/219,681.88
  6. Step 6: Final answer
    x = 192,001.64

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1.5x scale

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.