Home / 131,275.68-181,158.12-74,685.84

Finding the Fourth Proportional to 131,275.68, 181,158.12 and 74,685.84

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Solution

The fourth proportional to 131,275.68, 181,158.12 and 74,685.84 is: 103,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,275.68 : 181,158.12 = 74,685.84 : x
  2. Step 2: Convert to fraction form
    131,275.68/181,158.12 = 74,685.84/x
  3. Step 3: Cross multiply
    131,275.68x = 181,158.12 × 74,685.84
  4. Step 4: Simplify right side
    131,275.68x = 13,529,946,365.02
  5. Step 5: Solve for x
    x = 13,529,946,365.02/131,275.68
  6. Step 6: Final answer
    x = 103,065.14

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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.