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Finding the Fourth Proportional to 189,303.01, 261,243.08 and 103,263.45

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Solution

The fourth proportional to 189,303.01, 261,243.08 and 103,263.45 is: 142,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,303.01 : 261,243.08 = 103,263.45 : x
  2. Step 2: Convert to fraction form
    189,303.01/261,243.08 = 103,263.45/x
  3. Step 3: Cross multiply
    189,303.01x = 261,243.08 × 103,263.45
  4. Step 4: Simplify right side
    189,303.01x = 26,976,860,620.69
  5. Step 5: Solve for x
    x = 26,976,860,620.69/189,303.01
  6. Step 6: Final answer
    x = 142,506.24

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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.