Home / 97,421.40-146,132.10-81,018.90

Finding the Fourth Proportional to 97,421.40, 146,132.10 and 81,018.90

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Solution

The fourth proportional to 97,421.40, 146,132.10 and 81,018.90 is: 121,528.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,421.40 : 146,132.10 = 81,018.90 : x
  2. Step 2: Convert to fraction form
    97,421.40/146,132.10 = 81,018.90/x
  3. Step 3: Cross multiply
    97,421.40x = 146,132.10 × 81,018.90
  4. Step 4: Simplify right side
    97,421.40x = 11,839,461,996.69
  5. Step 5: Solve for x
    x = 11,839,461,996.69/97,421.40
  6. Step 6: Final answer
    x = 121,528.35

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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.