Home / 131,315.56-181,208.02-77,605.58

Finding the Fourth Proportional to 131,315.56, 181,208.02 and 77,605.58

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Solution

The fourth proportional to 131,315.56, 181,208.02 and 77,605.58 is: 107,091.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,315.56 : 181,208.02 = 77,605.58 : x
  2. Step 2: Convert to fraction form
    131,315.56/181,208.02 = 77,605.58/x
  3. Step 3: Cross multiply
    131,315.56x = 181,208.02 × 77,605.58
  4. Step 4: Simplify right side
    131,315.56x = 14,062,753,492.75
  5. Step 5: Solve for x
    x = 14,062,753,492.75/131,315.56
  6. Step 6: Final answer
    x = 107,091.30

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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.