Home / 138,330,477-190,984,099.18-86,196,103.56

Finding the Fourth Proportional to 138,330,477, 190,984,099.18 and 86,196,103.56

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Solution

The fourth proportional to 138,330,477, 190,984,099.18 and 86,196,103.56 is: 119,005,482.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330,477 : 190,984,099.18 = 86,196,103.56 : x
  2. Step 2: Convert to fraction form
    138,330,477/190,984,099.18 = 86,196,103.56/x
  3. Step 3: Cross multiply
    138,330,477x = 190,984,099.18 × 86,196,103.56
  4. Step 4: Simplify right side
    138,330,477x = 16,462,085,191,232,592
  5. Step 5: Solve for x
    x = 16,462,085,191,232,592/138,330,477
  6. Step 6: Final answer
    x = 119,005,482.73

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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.