Home / 190,154.10-285,231.15-115,358.70

Finding the Fourth Proportional to 190,154.10, 285,231.15 and 115,358.70

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Solution

The fourth proportional to 190,154.10, 285,231.15 and 115,358.70 is: 173,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,154.10 : 285,231.15 = 115,358.70 : x
  2. Step 2: Convert to fraction form
    190,154.10/285,231.15 = 115,358.70/x
  3. Step 3: Cross multiply
    190,154.10x = 285,231.15 × 115,358.70
  4. Step 4: Simplify right side
    190,154.10x = 32,903,894,663.51
  5. Step 5: Solve for x
    x = 32,903,894,663.51/190,154.10
  6. Step 6: Final answer
    x = 173,038.05

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1.5x scale

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.