Home / 145,822.90-201,235.56-78,754.90

Finding the Fourth Proportional to 145,822.90, 201,235.56 and 78,754.90

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Solution

The fourth proportional to 145,822.90, 201,235.56 and 78,754.90 is: 108,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,822.90 : 201,235.56 = 78,754.90 : x
  2. Step 2: Convert to fraction form
    145,822.90/201,235.56 = 78,754.90/x
  3. Step 3: Cross multiply
    145,822.90x = 201,235.56 × 78,754.90
  4. Step 4: Simplify right side
    145,822.90x = 15,848,286,404.24
  5. Step 5: Solve for x
    x = 15,848,286,404.24/145,822.90
  6. Step 6: Final answer
    x = 108,681.74

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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.