Home / 139,968,133.80-209,952,200.70-103,688,428.20

Finding the Fourth Proportional to 139,968,133.80, 209,952,200.70 and 103,688,428.20

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Solution

The fourth proportional to 139,968,133.80, 209,952,200.70 and 103,688,428.20 is: 155,532,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,133.80 : 209,952,200.70 = 103,688,428.20 : x
  2. Step 2: Convert to fraction form
    139,968,133.80/209,952,200.70 = 103,688,428.20/x
  3. Step 3: Cross multiply
    139,968,133.80x = 209,952,200.70 × 103,688,428.20
  4. Step 4: Simplify right side
    139,968,133.80x = 21,769,613,687,713,940
  5. Step 5: Solve for x
    x = 21,769,613,687,713,940/139,968,133.80
  6. Step 6: Final answer
    x = 155,532,642.30

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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.