Home / 212,422.89-293,109.29-121,762.17

Finding the Fourth Proportional to 212,422.89, 293,109.29 and 121,762.17

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Solution

The fourth proportional to 212,422.89, 293,109.29 and 121,762.17 is: 168,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,422.89 : 293,109.29 = 121,762.17 : x
  2. Step 2: Convert to fraction form
    212,422.89/293,109.29 = 121,762.17/x
  3. Step 3: Cross multiply
    212,422.89x = 293,109.29 × 121,762.17
  4. Step 4: Simplify right side
    212,422.89x = 35,689,622,588.75
  5. Step 5: Solve for x
    x = 35,689,622,588.75/212,422.89
  6. Step 6: Final answer
    x = 168,012.13

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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.