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Finding the Fourth Proportional to 121,716.86, 182,303.03 and 70,362.61

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Solution

The fourth proportional to 121,716.86, 182,303.03 and 70,362.61 is: 105,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,716.86 : 182,303.03 = 70,362.61 : x
  2. Step 2: Convert to fraction form
    121,716.86/182,303.03 = 70,362.61/x
  3. Step 3: Cross multiply
    121,716.86x = 182,303.03 × 70,362.61
  4. Step 4: Simplify right side
    121,716.86x = 12,827,316,721.86
  5. Step 5: Solve for x
    x = 12,827,316,721.86/121,716.86
  6. Step 6: Final answer
    x = 105,386.53

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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.