Home / 103,388,648.40-142,676,335.44-56,978,902.98

Finding the Fourth Proportional to 103,388,648.40, 142,676,335.44 and 56,978,902.98

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Solution

The fourth proportional to 103,388,648.40, 142,676,335.44 and 56,978,902.98 is: 78,630,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,388,648.40 : 142,676,335.44 = 56,978,902.98 : x
  2. Step 2: Convert to fraction form
    103,388,648.40/142,676,335.44 = 56,978,902.98/x
  3. Step 3: Cross multiply
    103,388,648.40x = 142,676,335.44 × 56,978,902.98
  4. Step 4: Simplify right side
    103,388,648.40x = 8,129,541,074,577,695
  5. Step 5: Solve for x
    x = 8,129,541,074,577,695/103,388,648.40
  6. Step 6: Final answer
    x = 78,630,886.47

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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.