Home / 156,771,985.52-216,346,180.56-86,212,145

Finding the Fourth Proportional to 156,771,985.52, 216,346,180.56 and 86,212,145

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Solution

The fourth proportional to 156,771,985.52, 216,346,180.56 and 86,212,145 is: 118,973,222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,771,985.52 : 216,346,180.56 = 86,212,145 : x
  2. Step 2: Convert to fraction form
    156,771,985.52/216,346,180.56 = 86,212,145/x
  3. Step 3: Cross multiply
    156,771,985.52x = 216,346,180.56 × 86,212,145
  4. Step 4: Simplify right side
    156,771,985.52x = 18,651,668,288,634,900
  5. Step 5: Solve for x
    x = 18,651,668,288,634,900/156,771,985.52
  6. Step 6: Final answer
    x = 118,973,222.33

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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.