Home / 100,457,029.44-138,535,466.40-65,679,530.40

Finding the Fourth Proportional to 100,457,029.44, 138,535,466.40 and 65,679,530.40

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Solution

The fourth proportional to 100,457,029.44, 138,535,466.40 and 65,679,530.40 is: 90,575,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,457,029.44 : 138,535,466.40 = 65,679,530.40 : x
  2. Step 2: Convert to fraction form
    100,457,029.44/138,535,466.40 = 65,679,530.40/x
  3. Step 3: Cross multiply
    100,457,029.44x = 138,535,466.40 × 65,679,530.40
  4. Step 4: Simplify right side
    100,457,029.44x = 9,098,944,376,896,978
  5. Step 5: Solve for x
    x = 9,098,944,376,896,978/100,457,029.44
  6. Step 6: Final answer
    x = 90,575,487.13

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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.