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Finding the Fourth Proportional to 118,804.32, 163,890.54 and 71,045.10

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Solution

The fourth proportional to 118,804.32, 163,890.54 and 71,045.10 is: 98,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,804.32 : 163,890.54 = 71,045.10 : x
  2. Step 2: Convert to fraction form
    118,804.32/163,890.54 = 71,045.10/x
  3. Step 3: Cross multiply
    118,804.32x = 163,890.54 × 71,045.10
  4. Step 4: Simplify right side
    118,804.32x = 11,643,619,803.35
  5. Step 5: Solve for x
    x = 11,643,619,803.35/118,804.32
  6. Step 6: Final answer
    x = 98,006.70

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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.