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Finding the Fourth Proportional to 101,702.48, 140,335.79 and 56,378.12

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Solution

The fourth proportional to 101,702.48, 140,335.79 and 56,378.12 is: 77,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,702.48 : 140,335.79 = 56,378.12 : x
  2. Step 2: Convert to fraction form
    101,702.48/140,335.79 = 56,378.12/x
  3. Step 3: Cross multiply
    101,702.48x = 140,335.79 × 56,378.12
  4. Step 4: Simplify right side
    101,702.48x = 7,911,867,025.35
  5. Step 5: Solve for x
    x = 7,911,867,025.35/101,702.48
  6. Step 6: Final answer
    x = 77,794.24

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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.