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Finding the Fourth Proportional to 98,987.14, 136,715.03 and 67,100.68

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Solution

The fourth proportional to 98,987.14, 136,715.03 and 67,100.68 is: 92,675.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,987.14 : 136,715.03 = 67,100.68 : x
  2. Step 2: Convert to fraction form
    98,987.14/136,715.03 = 67,100.68/x
  3. Step 3: Cross multiply
    98,987.14x = 136,715.03 × 67,100.68
  4. Step 4: Simplify right side
    98,987.14x = 9,173,671,479.22
  5. Step 5: Solve for x
    x = 9,173,671,479.22/98,987.14
  6. Step 6: Final answer
    x = 92,675.39

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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.