Home / 97,128.60-145,401.30-57,665.40

Finding the Fourth Proportional to 97,128.60, 145,401.30 and 57,665.40

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Solution

The fourth proportional to 97,128.60, 145,401.30 and 57,665.40 is: 86,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,128.60 : 145,401.30 = 57,665.40 : x
  2. Step 2: Convert to fraction form
    97,128.60/145,401.30 = 57,665.40/x
  3. Step 3: Cross multiply
    97,128.60x = 145,401.30 × 57,665.40
  4. Step 4: Simplify right side
    97,128.60x = 8,384,624,125.02
  5. Step 5: Solve for x
    x = 8,384,624,125.02/97,128.60
  6. Step 6: Final answer
    x = 86,324.98

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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.