Home / 86,940,007.20-130,410,010.80-65,257,214.40

Finding the Fourth Proportional to 86,940,007.20, 130,410,010.80 and 65,257,214.40

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Solution

The fourth proportional to 86,940,007.20, 130,410,010.80 and 65,257,214.40 is: 97,885,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,940,007.20 : 130,410,010.80 = 65,257,214.40 : x
  2. Step 2: Convert to fraction form
    86,940,007.20/130,410,010.80 = 65,257,214.40/x
  3. Step 3: Cross multiply
    86,940,007.20x = 130,410,010.80 × 65,257,214.40
  4. Step 4: Simplify right side
    86,940,007.20x = 8,510,194,034,681,915
  5. Step 5: Solve for x
    x = 8,510,194,034,681,915/86,940,007.20
  6. Step 6: Final answer
    x = 97,885,821.60

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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.