Home / 204,527,349.60-306,791,024.40-128,086,159.20

Finding the Fourth Proportional to 204,527,349.60, 306,791,024.40 and 128,086,159.20

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Solution

The fourth proportional to 204,527,349.60, 306,791,024.40 and 128,086,159.20 is: 192,129,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,527,349.60 : 306,791,024.40 = 128,086,159.20 : x
  2. Step 2: Convert to fraction form
    204,527,349.60/306,791,024.40 = 128,086,159.20/x
  3. Step 3: Cross multiply
    204,527,349.60x = 306,791,024.40 × 128,086,159.20
  4. Step 4: Simplify right side
    204,527,349.60x = 39,295,683,992,429,480
  5. Step 5: Solve for x
    x = 39,295,683,992,429,480/204,527,349.60
  6. Step 6: Final answer
    x = 192,129,238.80

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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.