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Finding the Fourth Proportional to 100,020.30, 140,261.70 and 100,020.30

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Solution

The fourth proportional to 100,020.30, 140,261.70 and 100,020.30 is: 140,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,020.30 : 140,261.70 = 100,020.30 : x
  2. Step 2: Convert to fraction form
    100,020.30/140,261.70 = 100,020.30/x
  3. Step 3: Cross multiply
    100,020.30x = 140,261.70 × 100,020.30
  4. Step 4: Simplify right side
    100,020.30x = 14,029,017,312.51
  5. Step 5: Solve for x
    x = 14,029,017,312.51/100,020.30
  6. Step 6: Final answer
    x = 140,261.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.