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Finding the Fourth Proportional to 118,209.52, 163,143.48 and 86,362.48

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Solution

The fourth proportional to 118,209.52, 163,143.48 and 86,362.48 is: 119,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,209.52 : 163,143.48 = 86,362.48 : x
  2. Step 2: Convert to fraction form
    118,209.52/163,143.48 = 86,362.48/x
  3. Step 3: Cross multiply
    118,209.52x = 163,143.48 × 86,362.48
  4. Step 4: Simplify right side
    118,209.52x = 14,089,475,528.63
  5. Step 5: Solve for x
    x = 14,089,475,528.63/118,209.52
  6. Step 6: Final answer
    x = 119,190.70

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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.