Home / 148,643.15-205,126.51-80,658.40

Finding the Fourth Proportional to 148,643.15, 205,126.51 and 80,658.40

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Solution

The fourth proportional to 148,643.15, 205,126.51 and 80,658.40 is: 111,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,643.15 : 205,126.51 = 80,658.40 : x
  2. Step 2: Convert to fraction form
    148,643.15/205,126.51 = 80,658.40/x
  3. Step 3: Cross multiply
    148,643.15x = 205,126.51 × 80,658.40
  4. Step 4: Simplify right side
    148,643.15x = 16,545,176,094.18
  5. Step 5: Solve for x
    x = 16,545,176,094.18/148,643.15
  6. Step 6: Final answer
    x = 111,308.03

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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.