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Finding the Fourth Proportional to 139,243.16, 192,155.64 and 75,580.94

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Solution

The fourth proportional to 139,243.16, 192,155.64 and 75,580.94 is: 104,301.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,243.16 : 192,155.64 = 75,580.94 : x
  2. Step 2: Convert to fraction form
    139,243.16/192,155.64 = 75,580.94/x
  3. Step 3: Cross multiply
    139,243.16x = 192,155.64 × 75,580.94
  4. Step 4: Simplify right side
    139,243.16x = 14,523,303,897.50
  5. Step 5: Solve for x
    x = 14,523,303,897.50/139,243.16
  6. Step 6: Final answer
    x = 104,301.74

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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.