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Finding the Fourth Proportional to 121,364.40, 181,973.70 and 62,315.40

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Solution

The fourth proportional to 121,364.40, 181,973.70 and 62,315.40 is: 93,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,364.40 : 181,973.70 = 62,315.40 : x
  2. Step 2: Convert to fraction form
    121,364.40/181,973.70 = 62,315.40/x
  3. Step 3: Cross multiply
    121,364.40x = 181,973.70 × 62,315.40
  4. Step 4: Simplify right side
    121,364.40x = 11,339,763,904.98
  5. Step 5: Solve for x
    x = 11,339,763,904.98/121,364.40
  6. Step 6: Final answer
    x = 93,435.67

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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.