Home / 127,812,805.20-191,719,207.80-86,998,136.40

Finding the Fourth Proportional to 127,812,805.20, 191,719,207.80 and 86,998,136.40

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Solution

The fourth proportional to 127,812,805.20, 191,719,207.80 and 86,998,136.40 is: 130,497,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,812,805.20 : 191,719,207.80 = 86,998,136.40 : x
  2. Step 2: Convert to fraction form
    127,812,805.20/191,719,207.80 = 86,998,136.40/x
  3. Step 3: Cross multiply
    127,812,805.20x = 191,719,207.80 × 86,998,136.40
  4. Step 4: Simplify right side
    127,812,805.20x = 16,679,213,790,684,346
  5. Step 5: Solve for x
    x = 16,679,213,790,684,346/127,812,805.20
  6. Step 6: Final answer
    x = 130,497,204.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.