Home / 145,845.20-218,940.60-144,808.40

Finding the Fourth Proportional to 145,845.20, 218,940.60 and 144,808.40

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Solution

The fourth proportional to 145,845.20, 218,940.60 and 144,808.40 is: 217,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,845.20 : 218,940.60 = 144,808.40 : x
  2. Step 2: Convert to fraction form
    145,845.20/218,940.60 = 144,808.40/x
  3. Step 3: Cross multiply
    145,845.20x = 218,940.60 × 144,808.40
  4. Step 4: Simplify right side
    145,845.20x = 31,704,437,981.04
  5. Step 5: Solve for x
    x = 31,704,437,981.04/145,845.20
  6. Step 6: Final answer
    x = 217,384.17

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1.5x scale

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.