Home / 142,920,644.40-197,266,476.60-81,078,116.40

Finding the Fourth Proportional to 142,920,644.40, 197,266,476.60 and 81,078,116.40

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Solution

The fourth proportional to 142,920,644.40, 197,266,476.60 and 81,078,116.40 is: 111,908,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,920,644.40 : 197,266,476.60 = 81,078,116.40 : x
  2. Step 2: Convert to fraction form
    142,920,644.40/197,266,476.60 = 81,078,116.40/x
  3. Step 3: Cross multiply
    142,920,644.40x = 197,266,476.60 × 81,078,116.40
  4. Step 4: Simplify right side
    142,920,644.40x = 15,993,994,351,592,676
  5. Step 5: Solve for x
    x = 15,993,994,351,592,676/142,920,644.40
  6. Step 6: Final answer
    x = 111,908,216.05

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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.