Home / 139,968,208.30-209,952,312.45-105,955,984.30

Finding the Fourth Proportional to 139,968,208.30, 209,952,312.45 and 105,955,984.30

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Solution

The fourth proportional to 139,968,208.30, 209,952,312.45 and 105,955,984.30 is: 158,933,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,208.30 : 209,952,312.45 = 105,955,984.30 : x
  2. Step 2: Convert to fraction form
    139,968,208.30/209,952,312.45 = 105,955,984.30/x
  3. Step 3: Cross multiply
    139,968,208.30x = 209,952,312.45 × 105,955,984.30
  4. Step 4: Simplify right side
    139,968,208.30x = 22,245,703,921,700,892
  5. Step 5: Solve for x
    x = 22,245,703,921,700,892/139,968,208.30
  6. Step 6: Final answer
    x = 158,933,976.45

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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.