Home / 153,391,821.52-211,680,378.12-83,777,208.40

Finding the Fourth Proportional to 153,391,821.52, 211,680,378.12 and 83,777,208.40

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Solution

The fourth proportional to 153,391,821.52, 211,680,378.12 and 83,777,208.40 is: 115,612,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,391,821.52 : 211,680,378.12 = 83,777,208.40 : x
  2. Step 2: Convert to fraction form
    153,391,821.52/211,680,378.12 = 83,777,208.40/x
  3. Step 3: Cross multiply
    153,391,821.52x = 211,680,378.12 × 83,777,208.40
  4. Step 4: Simplify right side
    153,391,821.52x = 17,733,991,151,950,042
  5. Step 5: Solve for x
    x = 17,733,991,151,950,042/153,391,821.52
  6. Step 6: Final answer
    x = 115,612,364.31

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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.