Home / 205,860,909.40-284,092,991.18-111,779,021.72

Finding the Fourth Proportional to 205,860,909.40, 284,092,991.18 and 111,779,021.72

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Solution

The fourth proportional to 205,860,909.40, 284,092,991.18 and 111,779,021.72 is: 154,257,730.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,860,909.40 : 284,092,991.18 = 111,779,021.72 : x
  2. Step 2: Convert to fraction form
    205,860,909.40/284,092,991.18 = 111,779,021.72/x
  3. Step 3: Cross multiply
    205,860,909.40x = 284,092,991.18 × 111,779,021.72
  4. Step 4: Simplify right side
    205,860,909.40x = 31,755,636,632,179,492
  5. Step 5: Solve for x
    x = 31,755,636,632,179,492/205,860,909.40
  6. Step 6: Final answer
    x = 154,257,730.26

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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.