Home / 215,754,987.55-297,723,879.44-121,663,861.51

Finding the Fourth Proportional to 215,754,987.55, 297,723,879.44 and 121,663,861.51

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Solution

The fourth proportional to 215,754,987.55, 297,723,879.44 and 121,663,861.51 is: 167,885,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,754,987.55 : 297,723,879.44 = 121,663,861.51 : x
  2. Step 2: Convert to fraction form
    215,754,987.55/297,723,879.44 = 121,663,861.51/x
  3. Step 3: Cross multiply
    215,754,987.55x = 297,723,879.44 × 121,663,861.51
  4. Step 4: Simplify right side
    215,754,987.55x = 36,222,236,835,799,776
  5. Step 5: Solve for x
    x = 36,222,236,835,799,776/215,754,987.55
  6. Step 6: Final answer
    x = 167,885,976.81

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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.