Home / 138,156,382.65-190,672,528.20-78,632,151.94

Finding the Fourth Proportional to 138,156,382.65, 190,672,528.20 and 78,632,151.94

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Solution

The fourth proportional to 138,156,382.65, 190,672,528.20 and 78,632,151.94 is: 108,521,886.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,156,382.65 : 190,672,528.20 = 78,632,151.94 : x
  2. Step 2: Convert to fraction form
    138,156,382.65/190,672,528.20 = 78,632,151.94/x
  3. Step 3: Cross multiply
    138,156,382.65x = 190,672,528.20 × 78,632,151.94
  4. Step 4: Simplify right side
    138,156,382.65x = 14,992,991,208,149,804
  5. Step 5: Solve for x
    x = 14,992,991,208,149,804/138,156,382.65
  6. Step 6: Final answer
    x = 108,521,886.00

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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.