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Finding the Fourth Proportional to 92,840.32, 139,134.64 and 67,762.72

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Solution

The fourth proportional to 92,840.32, 139,134.64 and 67,762.72 is: 101,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,840.32 : 139,134.64 = 67,762.72 : x
  2. Step 2: Convert to fraction form
    92,840.32/139,134.64 = 67,762.72/x
  3. Step 3: Cross multiply
    92,840.32x = 139,134.64 × 67,762.72
  4. Step 4: Simplify right side
    92,840.32x = 9,428,141,652.62
  5. Step 5: Solve for x
    x = 9,428,141,652.62/92,840.32
  6. Step 6: Final answer
    x = 101,552.23

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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.