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Finding the Fourth Proportional to 129,962, 179,348.10 and 70,346

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Solution

The fourth proportional to 129,962, 179,348.10 and 70,346 is: 97,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,962 : 179,348.10 = 70,346 : x
  2. Step 2: Convert to fraction form
    129,962/179,348.10 = 70,346/x
  3. Step 3: Cross multiply
    129,962x = 179,348.10 × 70,346
  4. Step 4: Simplify right side
    129,962x = 12,616,421,442.60
  5. Step 5: Solve for x
    x = 12,616,421,442.60/129,962
  6. Step 6: Final answer
    x = 97,077.77

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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.