Home / 138,330,473.99-190,984,095.03-86,196,100.55

Finding the Fourth Proportional to 138,330,473.99, 190,984,095.03 and 86,196,100.55

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Solution

The fourth proportional to 138,330,473.99, 190,984,095.03 and 86,196,100.55 is: 119,005,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330,473.99 : 190,984,095.03 = 86,196,100.55 : x
  2. Step 2: Convert to fraction form
    138,330,473.99/190,984,095.03 = 86,196,100.55/x
  3. Step 3: Cross multiply
    138,330,473.99x = 190,984,095.03 × 86,196,100.55
  4. Step 4: Simplify right side
    138,330,473.99x = 16,462,084,258,656,634
  5. Step 5: Solve for x
    x = 16,462,084,258,656,634/138,330,473.99
  6. Step 6: Final answer
    x = 119,005,478.57

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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.