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Finding the Fourth Proportional to 143,702.13, 215,553.05 and 67,782.95

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Solution

The fourth proportional to 143,702.13, 215,553.05 and 67,782.95 is: 101,674.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,702.13 : 215,553.05 = 67,782.95 : x
  2. Step 2: Convert to fraction form
    143,702.13/215,553.05 = 67,782.95/x
  3. Step 3: Cross multiply
    143,702.13x = 215,553.05 × 67,782.95
  4. Step 4: Simplify right side
    143,702.13x = 14,610,820,193.82
  5. Step 5: Solve for x
    x = 14,610,820,193.82/143,702.13
  6. Step 6: Final answer
    x = 101,674.35

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1.5x scale

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.