Home / 134,443.10-201,421.65-78,237.20

Finding the Fourth Proportional to 134,443.10, 201,421.65 and 78,237.20

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Solution

The fourth proportional to 134,443.10, 201,421.65 and 78,237.20 is: 117,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,443.10 : 201,421.65 = 78,237.20 : x
  2. Step 2: Convert to fraction form
    134,443.10/201,421.65 = 78,237.20/x
  3. Step 3: Cross multiply
    134,443.10x = 201,421.65 × 78,237.20
  4. Step 4: Simplify right side
    134,443.10x = 15,758,665,915.38
  5. Step 5: Solve for x
    x = 15,758,665,915.38/134,443.10
  6. Step 6: Final answer
    x = 117,214.39

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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.