Home / 105,089.30-145,022.02-57,343.44

Finding the Fourth Proportional to 105,089.30, 145,022.02 and 57,343.44

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Solution

The fourth proportional to 105,089.30, 145,022.02 and 57,343.44 is: 79,133.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,089.30 : 145,022.02 = 57,343.44 : x
  2. Step 2: Convert to fraction form
    105,089.30/145,022.02 = 57,343.44/x
  3. Step 3: Cross multiply
    105,089.30x = 145,022.02 × 57,343.44
  4. Step 4: Simplify right side
    105,089.30x = 8,316,061,215.83
  5. Step 5: Solve for x
    x = 8,316,061,215.83/105,089.30
  6. Step 6: Final answer
    x = 79,133.29

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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.