Home / 143,788,682.40-215,683,023.60-120,830,431.20

Finding the Fourth Proportional to 143,788,682.40, 215,683,023.60 and 120,830,431.20

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Solution

The fourth proportional to 143,788,682.40, 215,683,023.60 and 120,830,431.20 is: 181,245,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,788,682.40 : 215,683,023.60 = 120,830,431.20 : x
  2. Step 2: Convert to fraction form
    143,788,682.40/215,683,023.60 = 120,830,431.20/x
  3. Step 3: Cross multiply
    143,788,682.40x = 215,683,023.60 × 120,830,431.20
  4. Step 4: Simplify right side
    143,788,682.40x = 26,061,072,744,107,776
  5. Step 5: Solve for x
    x = 26,061,072,744,107,776/143,788,682.40
  6. Step 6: Final answer
    x = 181,245,646.80

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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.