Home / 118,189.35-163,137.69-72,881.55

Finding the Fourth Proportional to 118,189.35, 163,137.69 and 72,881.55

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Solution

The fourth proportional to 118,189.35, 163,137.69 and 72,881.55 is: 100,598.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,189.35 : 163,137.69 = 72,881.55 : x
  2. Step 2: Convert to fraction form
    118,189.35/163,137.69 = 72,881.55/x
  3. Step 3: Cross multiply
    118,189.35x = 163,137.69 × 72,881.55
  4. Step 4: Simplify right side
    118,189.35x = 11,889,727,710.62
  5. Step 5: Solve for x
    x = 11,889,727,710.62/118,189.35
  6. Step 6: Final answer
    x = 100,598.98

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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.