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Finding the Fourth Proportional to 139,210, 192,109.94 and 75,547.81

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Solution

The fourth proportional to 139,210, 192,109.94 and 75,547.81 is: 104,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,210 : 192,109.94 = 75,547.81 : x
  2. Step 2: Convert to fraction form
    139,210/192,109.94 = 75,547.81/x
  3. Step 3: Cross multiply
    139,210x = 192,109.94 × 75,547.81
  4. Step 4: Simplify right side
    139,210x = 14,513,485,246.23
  5. Step 5: Solve for x
    x = 14,513,485,246.23/139,210
  6. Step 6: Final answer
    x = 104,256.05

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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.