Home / 151,438.28-208,983.85-83,455.79

Finding the Fourth Proportional to 151,438.28, 208,983.85 and 83,455.79

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Solution

The fourth proportional to 151,438.28, 208,983.85 and 83,455.79 is: 115,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,438.28 : 208,983.85 = 83,455.79 : x
  2. Step 2: Convert to fraction form
    151,438.28/208,983.85 = 83,455.79/x
  3. Step 3: Cross multiply
    151,438.28x = 208,983.85 × 83,455.79
  4. Step 4: Simplify right side
    151,438.28x = 17,440,911,045.43
  5. Step 5: Solve for x
    x = 17,440,911,045.43/151,438.28
  6. Step 6: Final answer
    x = 115,168.45

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1.5x scale

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.