Home / 98,981.40-148,581.45-76,892.70

Finding the Fourth Proportional to 98,981.40, 148,581.45 and 76,892.70

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Solution

The fourth proportional to 98,981.40, 148,581.45 and 76,892.70 is: 115,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,981.40 : 148,581.45 = 76,892.70 : x
  2. Step 2: Convert to fraction form
    98,981.40/148,581.45 = 76,892.70/x
  3. Step 3: Cross multiply
    98,981.40x = 148,581.45 × 76,892.70
  4. Step 4: Simplify right side
    98,981.40x = 11,424,828,860.42
  5. Step 5: Solve for x
    x = 11,424,828,860.42/98,981.40
  6. Step 6: Final answer
    x = 115,424.00

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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.