Home / 121,828.71-168,144.39-70,870.98

Finding the Fourth Proportional to 121,828.71, 168,144.39 and 70,870.98

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Solution

The fourth proportional to 121,828.71, 168,144.39 and 70,870.98 is: 97,814.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,828.71 : 168,144.39 = 70,870.98 : x
  2. Step 2: Convert to fraction form
    121,828.71/168,144.39 = 70,870.98/x
  3. Step 3: Cross multiply
    121,828.71x = 168,144.39 × 70,870.98
  4. Step 4: Simplify right side
    121,828.71x = 11,916,557,700.80
  5. Step 5: Solve for x
    x = 11,916,557,700.80/121,828.71
  6. Step 6: Final answer
    x = 97,814.03

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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.