Home / 138,330,478-190,984,100.56-86,196,104.56

Finding the Fourth Proportional to 138,330,478, 190,984,100.56 and 86,196,104.56

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Solution

The fourth proportional to 138,330,478, 190,984,100.56 and 86,196,104.56 is: 119,005,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330,478 : 190,984,100.56 = 86,196,104.56 : x
  2. Step 2: Convert to fraction form
    138,330,478/190,984,100.56 = 86,196,104.56/x
  3. Step 3: Cross multiply
    138,330,478x = 190,984,100.56 × 86,196,104.56
  4. Step 4: Simplify right side
    138,330,478x = 16,462,085,501,167,316
  5. Step 5: Solve for x
    x = 16,462,085,501,167,316/138,330,478
  6. Step 6: Final answer
    x = 119,005,484.11

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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.