Home / 145,934.20-201,389.22-78,866.20

Finding the Fourth Proportional to 145,934.20, 201,389.22 and 78,866.20

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Solution

The fourth proportional to 145,934.20, 201,389.22 and 78,866.20 is: 108,835.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,934.20 : 201,389.22 = 78,866.20 : x
  2. Step 2: Convert to fraction form
    145,934.20/201,389.22 = 78,866.20/x
  3. Step 3: Cross multiply
    145,934.20x = 201,389.22 × 78,866.20
  4. Step 4: Simplify right side
    145,934.20x = 15,882,802,502.36
  5. Step 5: Solve for x
    x = 15,882,802,502.36/145,934.20
  6. Step 6: Final answer
    x = 108,835.37

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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.