Home / 86,445.03-129,445.25-69,498.39

Finding the Fourth Proportional to 86,445.03, 129,445.25 and 69,498.39

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Solution

The fourth proportional to 86,445.03, 129,445.25 and 69,498.39 is: 104,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,445.03 : 129,445.25 = 69,498.39 : x
  2. Step 2: Convert to fraction form
    86,445.03/129,445.25 = 69,498.39/x
  3. Step 3: Cross multiply
    86,445.03x = 129,445.25 × 69,498.39
  4. Step 4: Simplify right side
    86,445.03x = 8,996,236,120.66
  5. Step 5: Solve for x
    x = 8,996,236,120.66/86,445.03
  6. Step 6: Final answer
    x = 104,068.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.