Home / 90,989,186.70-136,483,780.05-56,551,809.90

Finding the Fourth Proportional to 90,989,186.70, 136,483,780.05 and 56,551,809.90

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Solution

The fourth proportional to 90,989,186.70, 136,483,780.05 and 56,551,809.90 is: 84,827,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989,186.70 : 136,483,780.05 = 56,551,809.90 : x
  2. Step 2: Convert to fraction form
    90,989,186.70/136,483,780.05 = 56,551,809.90/x
  3. Step 3: Cross multiply
    90,989,186.70x = 136,483,780.05 × 56,551,809.90
  4. Step 4: Simplify right side
    90,989,186.70x = 7,718,404,783,821,013
  5. Step 5: Solve for x
    x = 7,718,404,783,821,013/90,989,186.70
  6. Step 6: Final answer
    x = 84,827,714.85

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Similar ratio
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1.5x scale

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.