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Finding the Fourth Proportional to 129,963, 179,349.48 and 70,347

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Solution

The fourth proportional to 129,963, 179,349.48 and 70,347 is: 97,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,963 : 179,349.48 = 70,347 : x
  2. Step 2: Convert to fraction form
    129,963/179,349.48 = 70,347/x
  3. Step 3: Cross multiply
    129,963x = 179,349.48 × 70,347
  4. Step 4: Simplify right side
    129,963x = 12,616,697,869.56
  5. Step 5: Solve for x
    x = 12,616,697,869.56/129,963
  6. Step 6: Final answer
    x = 97,079.15

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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.