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Finding the Fourth Proportional to 139,622.58, 209,521.35 and 56,516.58

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Solution

The fourth proportional to 139,622.58, 209,521.35 and 56,516.58 is: 84,810.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,622.58 : 209,521.35 = 56,516.58 : x
  2. Step 2: Convert to fraction form
    139,622.58/209,521.35 = 56,516.58/x
  3. Step 3: Cross multiply
    139,622.58x = 209,521.35 × 56,516.58
  4. Step 4: Simplify right side
    139,622.58x = 11,841,430,138.98
  5. Step 5: Solve for x
    x = 11,841,430,138.98/139,622.58
  6. Step 6: Final answer
    x = 84,810.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.