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Finding the Fourth Proportional to 122,652.42, 169,245.18 and 70,978.38

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Solution

The fourth proportional to 122,652.42, 169,245.18 and 70,978.38 is: 97,941.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,652.42 : 169,245.18 = 70,978.38 : x
  2. Step 2: Convert to fraction form
    122,652.42/169,245.18 = 70,978.38/x
  3. Step 3: Cross multiply
    122,652.42x = 169,245.18 × 70,978.38
  4. Step 4: Simplify right side
    122,652.42x = 12,012,748,699.21
  5. Step 5: Solve for x
    x = 12,012,748,699.21/122,652.42
  6. Step 6: Final answer
    x = 97,941.39

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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.