Home / 131,109.64-180,931.38-74,521

Finding the Fourth Proportional to 131,109.64, 180,931.38 and 74,521

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Solution

The fourth proportional to 131,109.64, 180,931.38 and 74,521 is: 102,839.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,109.64 : 180,931.38 = 74,521 : x
  2. Step 2: Convert to fraction form
    131,109.64/180,931.38 = 74,521/x
  3. Step 3: Cross multiply
    131,109.64x = 180,931.38 × 74,521
  4. Step 4: Simplify right side
    131,109.64x = 13,483,187,368.98
  5. Step 5: Solve for x
    x = 13,483,187,368.98/131,109.64
  6. Step 6: Final answer
    x = 102,839.02

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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.