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Finding the Fourth Proportional to 125,706, 173,445.91 and 74,756.19

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Solution

The fourth proportional to 125,706, 173,445.91 and 74,756.19 is: 103,146.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,706 : 173,445.91 = 74,756.19 : x
  2. Step 2: Convert to fraction form
    125,706/173,445.91 = 74,756.19/x
  3. Step 3: Cross multiply
    125,706x = 173,445.91 × 74,756.19
  4. Step 4: Simplify right side
    125,706x = 12,966,155,402.68
  5. Step 5: Solve for x
    x = 12,966,155,402.68/125,706
  6. Step 6: Final answer
    x = 103,146.67

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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.