Home / 154,955,403.45-213,848,124.17-85,340,766.69

Finding the Fourth Proportional to 154,955,403.45, 213,848,124.17 and 85,340,766.69

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Solution

The fourth proportional to 154,955,403.45, 213,848,124.17 and 85,340,766.69 is: 117,775,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,955,403.45 : 213,848,124.17 = 85,340,766.69 : x
  2. Step 2: Convert to fraction form
    154,955,403.45/213,848,124.17 = 85,340,766.69/x
  3. Step 3: Cross multiply
    154,955,403.45x = 213,848,124.17 × 85,340,766.69
  4. Step 4: Simplify right side
    154,955,403.45x = 18,249,962,871,459,416
  5. Step 5: Solve for x
    x = 18,249,962,871,459,416/154,955,403.45
  6. Step 6: Final answer
    x = 117,775,582.30

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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.