Home / 102,914.25-142,021.67-55,810.25

Finding the Fourth Proportional to 102,914.25, 142,021.67 and 55,810.25

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Solution

The fourth proportional to 102,914.25, 142,021.67 and 55,810.25 is: 77,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,914.25 : 142,021.67 = 55,810.25 : x
  2. Step 2: Convert to fraction form
    102,914.25/142,021.67 = 55,810.25/x
  3. Step 3: Cross multiply
    102,914.25x = 142,021.67 × 55,810.25
  4. Step 4: Simplify right side
    102,914.25x = 7,926,264,629.07
  5. Step 5: Solve for x
    x = 7,926,264,629.07/102,914.25
  6. Step 6: Final answer
    x = 77,018.15

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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.