Home / 105,338.28-145,366.89-56,940.12

Finding the Fourth Proportional to 105,338.28, 145,366.89 and 56,940.12

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Solution

The fourth proportional to 105,338.28, 145,366.89 and 56,940.12 is: 78,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,338.28 : 145,366.89 = 56,940.12 : x
  2. Step 2: Convert to fraction form
    105,338.28/145,366.89 = 56,940.12/x
  3. Step 3: Cross multiply
    105,338.28x = 145,366.89 × 56,940.12
  4. Step 4: Simplify right side
    105,338.28x = 8,277,208,160.63
  5. Step 5: Solve for x
    x = 8,277,208,160.63/105,338.28
  6. Step 6: Final answer
    x = 78,577.40

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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.