Home / 105,218,998.80-157,828,498.20-86,323,318.80

Finding the Fourth Proportional to 105,218,998.80, 157,828,498.20 and 86,323,318.80

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Solution

The fourth proportional to 105,218,998.80, 157,828,498.20 and 86,323,318.80 is: 129,484,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,218,998.80 : 157,828,498.20 = 86,323,318.80 : x
  2. Step 2: Convert to fraction form
    105,218,998.80/157,828,498.20 = 86,323,318.80/x
  3. Step 3: Cross multiply
    105,218,998.80x = 157,828,498.20 × 86,323,318.80
  4. Step 4: Simplify right side
    105,218,998.80x = 13,624,279,765,843,824
  5. Step 5: Solve for x
    x = 13,624,279,765,843,824/105,218,998.80
  6. Step 6: Final answer
    x = 129,484,978.20

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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.