Home / 142,507.20-213,530.40-89,822.40

Finding the Fourth Proportional to 142,507.20, 213,530.40 and 89,822.40

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Solution

The fourth proportional to 142,507.20, 213,530.40 and 89,822.40 is: 134,588.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,507.20 : 213,530.40 = 89,822.40 : x
  2. Step 2: Convert to fraction form
    142,507.20/213,530.40 = 89,822.40/x
  3. Step 3: Cross multiply
    142,507.20x = 213,530.40 × 89,822.40
  4. Step 4: Simplify right side
    142,507.20x = 19,179,813,000.96
  5. Step 5: Solve for x
    x = 19,179,813,000.96/142,507.20
  6. Step 6: Final answer
    x = 134,588.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.