Home / 135,541.74-187,118.40-105,259.08

Finding the Fourth Proportional to 135,541.74, 187,118.40 and 105,259.08

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Solution

The fourth proportional to 135,541.74, 187,118.40 and 105,259.08 is: 145,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,541.74 : 187,118.40 = 105,259.08 : x
  2. Step 2: Convert to fraction form
    135,541.74/187,118.40 = 105,259.08/x
  3. Step 3: Cross multiply
    135,541.74x = 187,118.40 × 105,259.08
  4. Step 4: Simplify right side
    135,541.74x = 19,695,910,635.07
  5. Step 5: Solve for x
    x = 19,695,910,635.07/135,541.74
  6. Step 6: Final answer
    x = 145,312.51

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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.