Home / 201,965.40-302,948.10-127,315.80

Finding the Fourth Proportional to 201,965.40, 302,948.10 and 127,315.80

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Solution

The fourth proportional to 201,965.40, 302,948.10 and 127,315.80 is: 190,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,965.40 : 302,948.10 = 127,315.80 : x
  2. Step 2: Convert to fraction form
    201,965.40/302,948.10 = 127,315.80/x
  3. Step 3: Cross multiply
    201,965.40x = 302,948.10 × 127,315.80
  4. Step 4: Simplify right side
    201,965.40x = 38,570,079,709.98
  5. Step 5: Solve for x
    x = 38,570,079,709.98/201,965.40
  6. Step 6: Final answer
    x = 190,973.70

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1.5x scale

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.