Home / 221,159,723.32-305,261,116.86-128,370,124.72

Finding the Fourth Proportional to 221,159,723.32, 305,261,116.86 and 128,370,124.72

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Solution

The fourth proportional to 221,159,723.32, 305,261,116.86 and 128,370,124.72 is: 177,186,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,159,723.32 : 305,261,116.86 = 128,370,124.72 : x
  2. Step 2: Convert to fraction form
    221,159,723.32/305,261,116.86 = 128,370,124.72/x
  3. Step 3: Cross multiply
    221,159,723.32x = 305,261,116.86 × 128,370,124.72
  4. Step 4: Simplify right side
    221,159,723.32x = 39,186,407,643,484,696
  5. Step 5: Solve for x
    x = 39,186,407,643,484,696/221,159,723.32
  6. Step 6: Final answer
    x = 177,186,004.10

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Why These Related Problems?

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