Home / 212,612.48-293,406.72-121,972.40

Finding the Fourth Proportional to 212,612.48, 293,406.72 and 121,972.40

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Solution

The fourth proportional to 212,612.48, 293,406.72 and 121,972.40 is: 168,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,612.48 : 293,406.72 = 121,972.40 : x
  2. Step 2: Convert to fraction form
    212,612.48/293,406.72 = 121,972.40/x
  3. Step 3: Cross multiply
    212,612.48x = 293,406.72 × 121,972.40
  4. Step 4: Simplify right side
    212,612.48x = 35,787,521,814.53
  5. Step 5: Solve for x
    x = 35,787,521,814.53/212,612.48
  6. Step 6: Final answer
    x = 168,322.77

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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.