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Finding the Fourth Proportional to 129,933, 179,307.63 and 70,317

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Solution

The fourth proportional to 129,933, 179,307.63 and 70,317 is: 97,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,933 : 179,307.63 = 70,317 : x
  2. Step 2: Convert to fraction form
    129,933/179,307.63 = 70,317/x
  3. Step 3: Cross multiply
    129,933x = 179,307.63 × 70,317
  4. Step 4: Simplify right side
    129,933x = 12,608,374,618.71
  5. Step 5: Solve for x
    x = 12,608,374,618.71/129,933
  6. Step 6: Final answer
    x = 97,037.51

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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.