Home / 139,968,129.55-209,952,194.33-103,688,423.95

Finding the Fourth Proportional to 139,968,129.55, 209,952,194.33 and 103,688,423.95

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Solution

The fourth proportional to 139,968,129.55, 209,952,194.33 and 103,688,423.95 is: 155,532,635.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,129.55 : 209,952,194.33 = 103,688,423.95 : x
  2. Step 2: Convert to fraction form
    139,968,129.55/209,952,194.33 = 103,688,423.95/x
  3. Step 3: Cross multiply
    139,968,129.55x = 209,952,194.33 × 103,688,423.95
  4. Step 4: Simplify right side
    139,968,129.55x = 21,769,612,134,921,828
  5. Step 5: Solve for x
    x = 21,769,612,134,921,828/139,968,129.55
  6. Step 6: Final answer
    x = 155,532,635.93

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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.