Home / 143,947.47-198,594-83,484.21

Finding the Fourth Proportional to 143,947.47, 198,594 and 83,484.21

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Solution

The fourth proportional to 143,947.47, 198,594 and 83,484.21 is: 115,177.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,947.47 : 198,594 = 83,484.21 : x
  2. Step 2: Convert to fraction form
    143,947.47/198,594 = 83,484.21/x
  3. Step 3: Cross multiply
    143,947.47x = 198,594 × 83,484.21
  4. Step 4: Simplify right side
    143,947.47x = 16,579,463,200.74
  5. Step 5: Solve for x
    x = 16,579,463,200.74/143,947.47
  6. Step 6: Final answer
    x = 115,177.18

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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.