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Finding the Fourth Proportional to 122,493.51, 169,040.23 and 77,200.74

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Solution

The fourth proportional to 122,493.51, 169,040.23 and 77,200.74 is: 106,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,493.51 : 169,040.23 = 77,200.74 : x
  2. Step 2: Convert to fraction form
    122,493.51/169,040.23 = 77,200.74/x
  3. Step 3: Cross multiply
    122,493.51x = 169,040.23 × 77,200.74
  4. Step 4: Simplify right side
    122,493.51x = 13,050,030,845.77
  5. Step 5: Solve for x
    x = 13,050,030,845.77/122,493.51
  6. Step 6: Final answer
    x = 106,536.51

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1.5x scale

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.