Home / 138,521,259.02-191,112,921.43-79,782,748.22

Finding the Fourth Proportional to 138,521,259.02, 191,112,921.43 and 79,782,748.22

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Solution

The fourth proportional to 138,521,259.02, 191,112,921.43 and 79,782,748.22 is: 110,073,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,521,259.02 : 191,112,921.43 = 79,782,748.22 : x
  2. Step 2: Convert to fraction form
    138,521,259.02/191,112,921.43 = 79,782,748.22/x
  3. Step 3: Cross multiply
    138,521,259.02x = 191,112,921.43 × 79,782,748.22
  4. Step 4: Simplify right side
    138,521,259.02x = 15,247,514,090,883,312
  5. Step 5: Solve for x
    x = 15,247,514,090,883,312/138,521,259.02
  6. Step 6: Final answer
    x = 110,073,458.76

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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.