Home / 105,714.90-145,886.45-57,969.05

Finding the Fourth Proportional to 105,714.90, 145,886.45 and 57,969.05

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Solution

The fourth proportional to 105,714.90, 145,886.45 and 57,969.05 is: 79,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,714.90 : 145,886.45 = 57,969.05 : x
  2. Step 2: Convert to fraction form
    105,714.90/145,886.45 = 57,969.05/x
  3. Step 3: Cross multiply
    105,714.90x = 145,886.45 × 57,969.05
  4. Step 4: Simplify right side
    105,714.90x = 8,456,897,895.10
  5. Step 5: Solve for x
    x = 8,456,897,895.10/105,714.90
  6. Step 6: Final answer
    x = 79,997.22

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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.