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Finding the Fourth Proportional to 145,956.82, 201,303.79 and 100,624.41

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Solution

The fourth proportional to 145,956.82, 201,303.79 and 100,624.41 is: 138,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,956.82 : 201,303.79 = 100,624.41 : x
  2. Step 2: Convert to fraction form
    145,956.82/201,303.79 = 100,624.41/x
  3. Step 3: Cross multiply
    145,956.82x = 201,303.79 × 100,624.41
  4. Step 4: Simplify right side
    145,956.82x = 20,256,075,099.51
  5. Step 5: Solve for x
    x = 20,256,075,099.51/145,956.82
  6. Step 6: Final answer
    x = 138,781.29

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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.