Home / 86,908,900.20-130,363,350.30-72,878,857.80

Finding the Fourth Proportional to 86,908,900.20, 130,363,350.30 and 72,878,857.80

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Solution

The fourth proportional to 86,908,900.20, 130,363,350.30 and 72,878,857.80 is: 109,318,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908,900.20 : 130,363,350.30 = 72,878,857.80 : x
  2. Step 2: Convert to fraction form
    86,908,900.20/130,363,350.30 = 72,878,857.80/x
  3. Step 3: Cross multiply
    86,908,900.20x = 130,363,350.30 × 72,878,857.80
  4. Step 4: Simplify right side
    86,908,900.20x = 9,500,732,068,845,286
  5. Step 5: Solve for x
    x = 9,500,732,068,845,286/86,908,900.20
  6. Step 6: Final answer
    x = 109,318,286.70

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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.