Home / 99,643,570.30-149,488,975.05-51,128,911.90

Finding the Fourth Proportional to 99,643,570.30, 149,488,975.05 and 51,128,911.90

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Solution

The fourth proportional to 99,643,570.30, 149,488,975.05 and 51,128,911.90 is: 76,705,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643,570.30 : 149,488,975.05 = 51,128,911.90 : x
  2. Step 2: Convert to fraction form
    99,643,570.30/149,488,975.05 = 51,128,911.90/x
  3. Step 3: Cross multiply
    99,643,570.30x = 149,488,975.05 × 51,128,911.90
  4. Step 4: Simplify right side
    99,643,570.30x = 7,643,208,635,352,748
  5. Step 5: Solve for x
    x = 7,643,208,635,352,748/99,643,570.30
  6. Step 6: Final answer
    x = 76,705,487.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.