Home / 105,396.18-145,445.67-57,650.46

Finding the Fourth Proportional to 105,396.18, 145,445.67 and 57,650.46

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Solution

The fourth proportional to 105,396.18, 145,445.67 and 57,650.46 is: 79,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,396.18 : 145,445.67 = 57,650.46 : x
  2. Step 2: Convert to fraction form
    105,396.18/145,445.67 = 57,650.46/x
  3. Step 3: Cross multiply
    105,396.18x = 145,445.67 × 57,650.46
  4. Step 4: Simplify right side
    105,396.18x = 8,385,009,780.51
  5. Step 5: Solve for x
    x = 8,385,009,780.51/105,396.18
  6. Step 6: Final answer
    x = 79,557.06

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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.