Home / 131,681.12-181,719.73-74,332.51

Finding the Fourth Proportional to 131,681.12, 181,719.73 and 74,332.51

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Solution

The fourth proportional to 131,681.12, 181,719.73 and 74,332.51 is: 102,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,681.12 : 181,719.73 = 74,332.51 : x
  2. Step 2: Convert to fraction form
    131,681.12/181,719.73 = 74,332.51/x
  3. Step 3: Cross multiply
    131,681.12x = 181,719.73 × 74,332.51
  4. Step 4: Simplify right side
    131,681.12x = 13,507,683,647.42
  5. Step 5: Solve for x
    x = 13,507,683,647.42/131,681.12
  6. Step 6: Final answer
    x = 102,578.74

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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.