Home / 138,045,976.32-190,572,480-85,851,826.56

Finding the Fourth Proportional to 138,045,976.32, 190,572,480 and 85,851,826.56

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Solution

The fourth proportional to 138,045,976.32, 190,572,480 and 85,851,826.56 is: 118,518,452.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,045,976.32 : 190,572,480 = 85,851,826.56 : x
  2. Step 2: Convert to fraction form
    138,045,976.32/190,572,480 = 85,851,826.56/x
  3. Step 3: Cross multiply
    138,045,976.32x = 190,572,480 × 85,851,826.56
  4. Step 4: Simplify right side
    138,045,976.32x = 16,360,995,500,069,070
  5. Step 5: Solve for x
    x = 16,360,995,500,069,070/138,045,976.32
  6. Step 6: Final answer
    x = 118,518,452.59

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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.