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Finding the Fourth Proportional to 118,530.68, 163,477.86 and 100,684.76

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Solution

The fourth proportional to 118,530.68, 163,477.86 and 100,684.76 is: 138,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,530.68 : 163,477.86 = 100,684.76 : x
  2. Step 2: Convert to fraction form
    118,530.68/163,477.86 = 100,684.76/x
  3. Step 3: Cross multiply
    118,530.68x = 163,477.86 × 100,684.76
  4. Step 4: Simplify right side
    118,530.68x = 16,459,729,099.41
  5. Step 5: Solve for x
    x = 16,459,729,099.41/118,530.68
  6. Step 6: Final answer
    x = 138,864.72

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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.