Home / 143,788,689.40-215,683,034.10-120,830,438.20

Finding the Fourth Proportional to 143,788,689.40, 215,683,034.10 and 120,830,438.20

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Solution

The fourth proportional to 143,788,689.40, 215,683,034.10 and 120,830,438.20 is: 181,245,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,788,689.40 : 215,683,034.10 = 120,830,438.20 : x
  2. Step 2: Convert to fraction form
    143,788,689.40/215,683,034.10 = 120,830,438.20/x
  3. Step 3: Cross multiply
    143,788,689.40x = 215,683,034.10 × 120,830,438.20
  4. Step 4: Simplify right side
    143,788,689.40x = 26,061,075,522,608,544
  5. Step 5: Solve for x
    x = 26,061,075,522,608,544/143,788,689.40
  6. Step 6: Final answer
    x = 181,245,657.30

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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.