Home / 156,133,826-215,465,945.64-86,520,369.36

Finding the Fourth Proportional to 156,133,826, 215,465,945.64 and 86,520,369.36

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Solution

The fourth proportional to 156,133,826, 215,465,945.64 and 86,520,369.36 is: 119,398,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,133,826 : 215,465,945.64 = 86,520,369.36 : x
  2. Step 2: Convert to fraction form
    156,133,826/215,465,945.64 = 86,520,369.36/x
  3. Step 3: Cross multiply
    156,133,826x = 215,465,945.64 × 86,520,369.36
  4. Step 4: Simplify right side
    156,133,826x = 18,642,193,201,274,480
  5. Step 5: Solve for x
    x = 18,642,193,201,274,480/156,133,826
  6. Step 6: Final answer
    x = 119,398,811.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.