Home / 155,904.84-215,005.16-102,170.36

Finding the Fourth Proportional to 155,904.84, 215,005.16 and 102,170.36

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Solution

The fourth proportional to 155,904.84, 215,005.16 and 102,170.36 is: 140,901.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,904.84 : 215,005.16 = 102,170.36 : x
  2. Step 2: Convert to fraction form
    155,904.84/215,005.16 = 102,170.36/x
  3. Step 3: Cross multiply
    155,904.84x = 215,005.16 × 102,170.36
  4. Step 4: Simplify right side
    155,904.84x = 21,967,154,599.06
  5. Step 5: Solve for x
    x = 21,967,154,599.06/155,904.84
  6. Step 6: Final answer
    x = 140,901.04

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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.