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Finding the Fourth Proportional to 143,995.80, 198,669.75 and 93,036.90

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Solution

The fourth proportional to 143,995.80, 198,669.75 and 93,036.90 is: 128,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,995.80 : 198,669.75 = 93,036.90 : x
  2. Step 2: Convert to fraction form
    143,995.80/198,669.75 = 93,036.90/x
  3. Step 3: Cross multiply
    143,995.80x = 198,669.75 × 93,036.90
  4. Step 4: Simplify right side
    143,995.80x = 18,483,617,663.78
  5. Step 5: Solve for x
    x = 18,483,617,663.78/143,995.80
  6. Step 6: Final answer
    x = 128,362.20

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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.