Home / 105,601.36-145,730-57,203.40

Finding the Fourth Proportional to 105,601.36, 145,730 and 57,203.40

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Solution

The fourth proportional to 105,601.36, 145,730 and 57,203.40 is: 78,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,601.36 : 145,730 = 57,203.40 : x
  2. Step 2: Convert to fraction form
    105,601.36/145,730 = 57,203.40/x
  3. Step 3: Cross multiply
    105,601.36x = 145,730 × 57,203.40
  4. Step 4: Simplify right side
    105,601.36x = 8,336,251,482
  5. Step 5: Solve for x
    x = 8,336,251,482/105,601.36
  6. Step 6: Final answer
    x = 78,940.76

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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.