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Finding the Fourth Proportional to 99,014.64, 136,702.32 and 68,790.24

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Solution

The fourth proportional to 99,014.64, 136,702.32 and 68,790.24 is: 94,973.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,014.64 : 136,702.32 = 68,790.24 : x
  2. Step 2: Convert to fraction form
    99,014.64/136,702.32 = 68,790.24/x
  3. Step 3: Cross multiply
    99,014.64x = 136,702.32 × 68,790.24
  4. Step 4: Simplify right side
    99,014.64x = 9,403,785,401.36
  5. Step 5: Solve for x
    x = 9,403,785,401.36/99,014.64
  6. Step 6: Final answer
    x = 94,973.69

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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.