Home / 105,702.12-145,867.81-57,955.35

Finding the Fourth Proportional to 105,702.12, 145,867.81 and 57,955.35

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Solution

The fourth proportional to 105,702.12, 145,867.81 and 57,955.35 is: 79,977.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,702.12 : 145,867.81 = 57,955.35 : x
  2. Step 2: Convert to fraction form
    105,702.12/145,867.81 = 57,955.35/x
  3. Step 3: Cross multiply
    105,702.12x = 145,867.81 × 57,955.35
  4. Step 4: Simplify right side
    105,702.12x = 8,453,819,982.28
  5. Step 5: Solve for x
    x = 8,453,819,982.28/105,702.12
  6. Step 6: Final answer
    x = 79,977.77

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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.