Home / 138,452,824.32-191,123,728.37-86,267,643.63

Finding the Fourth Proportional to 138,452,824.32, 191,123,728.37 and 86,267,643.63

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Solution

The fourth proportional to 138,452,824.32, 191,123,728.37 and 86,267,643.63 is: 119,086,004.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452,824.32 : 191,123,728.37 = 86,267,643.63 : x
  2. Step 2: Convert to fraction form
    138,452,824.32/191,123,728.37 = 86,267,643.63/x
  3. Step 3: Cross multiply
    138,452,824.32x = 191,123,728.37 × 86,267,643.63
  4. Step 4: Simplify right side
    138,452,824.32x = 16,487,793,688,260,080
  5. Step 5: Solve for x
    x = 16,487,793,688,260,080/138,452,824.32
  6. Step 6: Final answer
    x = 119,086,004.70

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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.