Home / 115,143,887.40-172,540,080.74-68,365,256.55

Finding the Fourth Proportional to 115,143,887.40, 172,540,080.74 and 68,365,256.55

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Solution

The fourth proportional to 115,143,887.40, 172,540,080.74 and 68,365,256.55 is: 102,443,535.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,143,887.40 : 172,540,080.74 = 68,365,256.55 : x
  2. Step 2: Convert to fraction form
    115,143,887.40/172,540,080.74 = 68,365,256.55/x
  3. Step 3: Cross multiply
    115,143,887.40x = 172,540,080.74 × 68,365,256.55
  4. Step 4: Simplify right side
    115,143,887.40x = 11,795,746,884,862,358
  5. Step 5: Solve for x
    x = 11,795,746,884,862,358/115,143,887.40
  6. Step 6: Final answer
    x = 102,443,535.23

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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.