Home / 145,742.40-201,032.52-100,341.56

Finding the Fourth Proportional to 145,742.40, 201,032.52 and 100,341.56

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Solution

The fourth proportional to 145,742.40, 201,032.52 and 100,341.56 is: 138,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.40 : 201,032.52 = 100,341.56 : x
  2. Step 2: Convert to fraction form
    145,742.40/201,032.52 = 100,341.56/x
  3. Step 3: Cross multiply
    145,742.40x = 201,032.52 × 100,341.56
  4. Step 4: Simplify right side
    145,742.40x = 20,171,916,667.53
  5. Step 5: Solve for x
    x = 20,171,916,667.53/145,742.40
  6. Step 6: Final answer
    x = 138,408.02

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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.