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Finding the Fourth Proportional to 121,253.69, 167,303.70 and 73,518.77

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Solution

The fourth proportional to 121,253.69, 167,303.70 and 73,518.77 is: 101,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,253.69 : 167,303.70 = 73,518.77 : x
  2. Step 2: Convert to fraction form
    121,253.69/167,303.70 = 73,518.77/x
  3. Step 3: Cross multiply
    121,253.69x = 167,303.70 × 73,518.77
  4. Step 4: Simplify right side
    121,253.69x = 12,299,961,533.83
  5. Step 5: Solve for x
    x = 12,299,961,533.83/121,253.69
  6. Step 6: Final answer
    x = 101,439.90

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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.