Home / 190,836.36-286,254.30-72,479.40

Finding the Fourth Proportional to 190,836.36, 286,254.30 and 72,479.40

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Solution

The fourth proportional to 190,836.36, 286,254.30 and 72,479.40 is: 108,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,836.36 : 286,254.30 = 72,479.40 : x
  2. Step 2: Convert to fraction form
    190,836.36/286,254.30 = 72,479.40/x
  3. Step 3: Cross multiply
    190,836.36x = 286,254.30 × 72,479.40
  4. Step 4: Simplify right side
    190,836.36x = 20,747,539,911.42
  5. Step 5: Solve for x
    x = 20,747,539,911.42/190,836.36
  6. Step 6: Final answer
    x = 108,719.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.