Home / 209,513,011.64-289,101,756.02-121,405,408.25

Finding the Fourth Proportional to 209,513,011.64, 289,101,756.02 and 121,405,408.25

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Solution

The fourth proportional to 209,513,011.64, 289,101,756.02 and 121,405,408.25 is: 167,524,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,513,011.64 : 289,101,756.02 = 121,405,408.25 : x
  2. Step 2: Convert to fraction form
    209,513,011.64/289,101,756.02 = 121,405,408.25/x
  3. Step 3: Cross multiply
    209,513,011.64x = 289,101,756.02 × 121,405,408.25
  4. Step 4: Simplify right side
    209,513,011.64x = 35,098,516,713,347,460
  5. Step 5: Solve for x
    x = 35,098,516,713,347,460/209,513,011.64
  6. Step 6: Final answer
    x = 167,524,281.38

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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.