Home / 143,871.51-198,668.05-90,248.70

Finding the Fourth Proportional to 143,871.51, 198,668.05 and 90,248.70

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Solution

The fourth proportional to 143,871.51, 198,668.05 and 90,248.70 is: 124,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,871.51 : 198,668.05 = 90,248.70 : x
  2. Step 2: Convert to fraction form
    143,871.51/198,668.05 = 90,248.70/x
  3. Step 3: Cross multiply
    143,871.51x = 198,668.05 × 90,248.70
  4. Step 4: Simplify right side
    143,871.51x = 17,929,533,018.41
  5. Step 5: Solve for x
    x = 17,929,533,018.41/143,871.51
  6. Step 6: Final answer
    x = 124,621.84

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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.