Home / 149,931.45-206,913.11-86,278.77

Finding the Fourth Proportional to 149,931.45, 206,913.11 and 86,278.77

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Solution

The fourth proportional to 149,931.45, 206,913.11 and 86,278.77 is: 119,069.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,931.45 : 206,913.11 = 86,278.77 : x
  2. Step 2: Convert to fraction form
    149,931.45/206,913.11 = 86,278.77/x
  3. Step 3: Cross multiply
    149,931.45x = 206,913.11 × 86,278.77
  4. Step 4: Simplify right side
    149,931.45x = 17,852,208,627.67
  5. Step 5: Solve for x
    x = 17,852,208,627.67/149,931.45
  6. Step 6: Final answer
    x = 119,069.14

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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.