Home / 161,931.87-223,465.29-89,332.80

Finding the Fourth Proportional to 161,931.87, 223,465.29 and 89,332.80

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Solution

The fourth proportional to 161,931.87, 223,465.29 and 89,332.80 is: 123,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,931.87 : 223,465.29 = 89,332.80 : x
  2. Step 2: Convert to fraction form
    161,931.87/223,465.29 = 89,332.80/x
  3. Step 3: Cross multiply
    161,931.87x = 223,465.29 × 89,332.80
  4. Step 4: Simplify right side
    161,931.87x = 19,962,780,058.51
  5. Step 5: Solve for x
    x = 19,962,780,058.51/161,931.87
  6. Step 6: Final answer
    x = 123,278.88

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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.