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Finding the Fourth Proportional to 129,941.71, 179,319.54 and 70,325.71

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Solution

The fourth proportional to 129,941.71, 179,319.54 and 70,325.71 is: 97,049.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,941.71 : 179,319.54 = 70,325.71 : x
  2. Step 2: Convert to fraction form
    129,941.71/179,319.54 = 70,325.71/x
  3. Step 3: Cross multiply
    129,941.71x = 179,319.54 × 70,325.71
  4. Step 4: Simplify right side
    129,941.71x = 12,610,773,967.37
  5. Step 5: Solve for x
    x = 12,610,773,967.37/129,941.71
  6. Step 6: Final answer
    x = 97,049.47

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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.