Home / 156,161,140.61-215,502,369.77-86,556,978.77

Finding the Fourth Proportional to 156,161,140.61, 215,502,369.77 and 86,556,978.77

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Solution

The fourth proportional to 156,161,140.61, 215,502,369.77 and 86,556,978.77 is: 119,448,628.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,161,140.61 : 215,502,369.77 = 86,556,978.77 : x
  2. Step 2: Convert to fraction form
    156,161,140.61/215,502,369.77 = 86,556,978.77/x
  3. Step 3: Cross multiply
    156,161,140.61x = 215,502,369.77 × 86,556,978.77
  4. Step 4: Simplify right side
    156,161,140.61x = 18,653,234,044,633,792
  5. Step 5: Solve for x
    x = 18,653,234,044,633,792/156,161,140.61
  6. Step 6: Final answer
    x = 119,448,628.33

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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.