Home / 125,880,475.89-172,456,867.13-121,162,509.79

Finding the Fourth Proportional to 125,880,475.89, 172,456,867.13 and 121,162,509.79

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Solution

The fourth proportional to 125,880,475.89, 172,456,867.13 and 121,162,509.79 is: 165,993,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,880,475.89 : 172,456,867.13 = 121,162,509.79 : x
  2. Step 2: Convert to fraction form
    125,880,475.89/172,456,867.13 = 121,162,509.79/x
  3. Step 3: Cross multiply
    125,880,475.89x = 172,456,867.13 × 121,162,509.79
  4. Step 4: Simplify right side
    125,880,475.89x = 20,895,306,851,991,356
  5. Step 5: Solve for x
    x = 20,895,306,851,991,356/125,880,475.89
  6. Step 6: Final answer
    x = 165,993,230.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.