Home / 130,388,512.80-195,582,769.20-78,732,447.60

Finding the Fourth Proportional to 130,388,512.80, 195,582,769.20 and 78,732,447.60

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Solution

The fourth proportional to 130,388,512.80, 195,582,769.20 and 78,732,447.60 is: 118,098,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,388,512.80 : 195,582,769.20 = 78,732,447.60 : x
  2. Step 2: Convert to fraction form
    130,388,512.80/195,582,769.20 = 78,732,447.60/x
  3. Step 3: Cross multiply
    130,388,512.80x = 195,582,769.20 × 78,732,447.60
  4. Step 4: Simplify right side
    130,388,512.80x = 15,398,710,127,501,892
  5. Step 5: Solve for x
    x = 15,398,710,127,501,892/130,388,512.80
  6. Step 6: Final answer
    x = 118,098,671.40

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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.