Home / 105,396.58-145,445.38-57,649.51

Finding the Fourth Proportional to 105,396.58, 145,445.38 and 57,649.51

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Solution

The fourth proportional to 105,396.58, 145,445.38 and 57,649.51 is: 79,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,396.58 : 145,445.38 = 57,649.51 : x
  2. Step 2: Convert to fraction form
    105,396.58/145,445.38 = 57,649.51/x
  3. Step 3: Cross multiply
    105,396.58x = 145,445.38 × 57,649.51
  4. Step 4: Simplify right side
    105,396.58x = 8,384,854,888.76
  5. Step 5: Solve for x
    x = 8,384,854,888.76/105,396.58
  6. Step 6: Final answer
    x = 79,555.28

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1.5x scale

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.