Home / 156,369,284.49-215,786,742.48-86,753,170.71

Finding the Fourth Proportional to 156,369,284.49, 215,786,742.48 and 86,753,170.71

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Solution

The fourth proportional to 156,369,284.49, 215,786,742.48 and 86,753,170.71 is: 119,717,783.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,369,284.49 : 215,786,742.48 = 86,753,170.71 : x
  2. Step 2: Convert to fraction form
    156,369,284.49/215,786,742.48 = 86,753,170.71/x
  3. Step 3: Cross multiply
    156,369,284.49x = 215,786,742.48 × 86,753,170.71
  4. Step 4: Simplify right side
    156,369,284.49x = 18,720,184,107,322,248
  5. Step 5: Solve for x
    x = 18,720,184,107,322,248/156,369,284.49
  6. Step 6: Final answer
    x = 119,717,783.25

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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.