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Finding the Fourth Proportional to 130,388,897.80, 195,583,346.70 and 84,472,395.40

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Solution

The fourth proportional to 130,388,897.80, 195,583,346.70 and 84,472,395.40 is: 126,708,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,388,897.80 : 195,583,346.70 = 84,472,395.40 : x
  2. Step 2: Convert to fraction form
    130,388,897.80/195,583,346.70 = 84,472,395.40/x
  3. Step 3: Cross multiply
    130,388,897.80x = 195,583,346.70 × 84,472,395.40
  4. Step 4: Simplify right side
    130,388,897.80x = 16,521,393,796,097,686
  5. Step 5: Solve for x
    x = 16,521,393,796,097,686/130,388,897.80
  6. Step 6: Final answer
    x = 126,708,593.10

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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.