Home / 103,680,612.70-155,520,919.05-83,525,220.70

Finding the Fourth Proportional to 103,680,612.70, 155,520,919.05 and 83,525,220.70

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Solution

The fourth proportional to 103,680,612.70, 155,520,919.05 and 83,525,220.70 is: 125,287,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,612.70 : 155,520,919.05 = 83,525,220.70 : x
  2. Step 2: Convert to fraction form
    103,680,612.70/155,520,919.05 = 83,525,220.70/x
  3. Step 3: Cross multiply
    103,680,612.70x = 155,520,919.05 × 83,525,220.70
  4. Step 4: Simplify right side
    103,680,612.70x = 12,989,919,087,118,086
  5. Step 5: Solve for x
    x = 12,989,919,087,118,086/103,680,612.70
  6. Step 6: Final answer
    x = 125,287,831.05

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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.