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Finding the Fourth Proportional to 139,968,573.40, 209,952,860.10 and 105,956,349.40

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Solution

The fourth proportional to 139,968,573.40, 209,952,860.10 and 105,956,349.40 is: 158,934,524.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,573.40 : 209,952,860.10 = 105,956,349.40 : x
  2. Step 2: Convert to fraction form
    139,968,573.40/209,952,860.10 = 105,956,349.40/x
  3. Step 3: Cross multiply
    139,968,573.40x = 209,952,860.10 × 105,956,349.40
  4. Step 4: Simplify right side
    139,968,573.40x = 22,245,838,602,284,920
  5. Step 5: Solve for x
    x = 22,245,838,602,284,920/139,968,573.40
  6. Step 6: Final answer
    x = 158,934,524.10

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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.