Home / 156,769,986.05-216,343,421.91-86,210,146.20

Finding the Fourth Proportional to 156,769,986.05, 216,343,421.91 and 86,210,146.20

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Solution

The fourth proportional to 156,769,986.05, 216,343,421.91 and 86,210,146.20 is: 118,970,464.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,769,986.05 : 216,343,421.91 = 86,210,146.20 : x
  2. Step 2: Convert to fraction form
    156,769,986.05/216,343,421.91 = 86,210,146.20/x
  3. Step 3: Cross multiply
    156,769,986.05x = 216,343,421.91 × 86,210,146.20
  4. Step 4: Simplify right side
    156,769,986.05x = 18,650,998,032,269,384
  5. Step 5: Solve for x
    x = 18,650,998,032,269,384/156,769,986.05
  6. Step 6: Final answer
    x = 118,970,464.33

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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.