Home / 123,981.60-185,972.40-40,864.80

Finding the Fourth Proportional to 123,981.60, 185,972.40 and 40,864.80

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Solution

The fourth proportional to 123,981.60, 185,972.40 and 40,864.80 is: 61,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,981.60 : 185,972.40 = 40,864.80 : x
  2. Step 2: Convert to fraction form
    123,981.60/185,972.40 = 40,864.80/x
  3. Step 3: Cross multiply
    123,981.60x = 185,972.40 × 40,864.80
  4. Step 4: Simplify right side
    123,981.60x = 7,599,724,931.52
  5. Step 5: Solve for x
    x = 7,599,724,931.52/123,981.60
  6. Step 6: Final answer
    x = 61,297.20

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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.