Home / 221,159,722.32-305,261,115.48-128,370,123.72

Finding the Fourth Proportional to 221,159,722.32, 305,261,115.48 and 128,370,123.72

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Solution

The fourth proportional to 221,159,722.32, 305,261,115.48 and 128,370,123.72 is: 177,186,002.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,159,722.32 : 305,261,115.48 = 128,370,123.72 : x
  2. Step 2: Convert to fraction form
    221,159,722.32/305,261,115.48 = 128,370,123.72/x
  3. Step 3: Cross multiply
    221,159,722.32x = 305,261,115.48 × 128,370,123.72
  4. Step 4: Simplify right side
    221,159,722.32x = 39,186,407,161,072,808
  5. Step 5: Solve for x
    x = 39,186,407,161,072,808/221,159,722.32
  6. Step 6: Final answer
    x = 177,186,002.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.