Home / 138,330,474.24-190,984,095.38-86,196,100.80

Finding the Fourth Proportional to 138,330,474.24, 190,984,095.38 and 86,196,100.80

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Solution

The fourth proportional to 138,330,474.24, 190,984,095.38 and 86,196,100.80 is: 119,005,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330,474.24 : 190,984,095.38 = 86,196,100.80 : x
  2. Step 2: Convert to fraction form
    138,330,474.24/190,984,095.38 = 86,196,100.80/x
  3. Step 3: Cross multiply
    138,330,474.24x = 190,984,095.38 × 86,196,100.80
  4. Step 4: Simplify right side
    138,330,474.24x = 16,462,084,336,140,314
  5. Step 5: Solve for x
    x = 16,462,084,336,140,314/138,330,474.24
  6. Step 6: Final answer
    x = 119,005,478.92

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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.