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Finding the Fourth Proportional to 191,567.70, 287,351.55 and 74,831.70

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Solution

The fourth proportional to 191,567.70, 287,351.55 and 74,831.70 is: 112,247.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,567.70 : 287,351.55 = 74,831.70 : x
  2. Step 2: Convert to fraction form
    191,567.70/287,351.55 = 74,831.70/x
  3. Step 3: Cross multiply
    191,567.70x = 287,351.55 × 74,831.70
  4. Step 4: Simplify right side
    191,567.70x = 21,503,004,984.14
  5. Step 5: Solve for x
    x = 21,503,004,984.14/191,567.70
  6. Step 6: Final answer
    x = 112,247.55

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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.