Home / 105,830.15-146,045.16-57,431.03

Finding the Fourth Proportional to 105,830.15, 146,045.16 and 57,431.03

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Solution

The fourth proportional to 105,830.15, 146,045.16 and 57,431.03 is: 79,254.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,830.15 : 146,045.16 = 57,431.03 : x
  2. Step 2: Convert to fraction form
    105,830.15/146,045.16 = 57,431.03/x
  3. Step 3: Cross multiply
    105,830.15x = 146,045.16 × 57,431.03
  4. Step 4: Simplify right side
    105,830.15x = 8,387,523,235.09
  5. Step 5: Solve for x
    x = 8,387,523,235.09/105,830.15
  6. Step 6: Final answer
    x = 79,254.58

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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.