Home / 128,442.28-192,643.96-34,955.32

Finding the Fourth Proportional to 128,442.28, 192,643.96 and 34,955.32

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Solution

The fourth proportional to 128,442.28, 192,643.96 and 34,955.32 is: 52,427.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,442.28 : 192,643.96 = 34,955.32 : x
  2. Step 2: Convert to fraction form
    128,442.28/192,643.96 = 34,955.32/x
  3. Step 3: Cross multiply
    128,442.28x = 192,643.96 × 34,955.32
  4. Step 4: Simplify right side
    128,442.28x = 6,733,931,267.87
  5. Step 5: Solve for x
    x = 6,733,931,267.87/128,442.28
  6. Step 6: Final answer
    x = 52,427.68

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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.