Home / 147,420.30-203,440.08-83,758.20

Finding the Fourth Proportional to 147,420.30, 203,440.08 and 83,758.20

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Solution

The fourth proportional to 147,420.30, 203,440.08 and 83,758.20 is: 115,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,420.30 : 203,440.08 = 83,758.20 : x
  2. Step 2: Convert to fraction form
    147,420.30/203,440.08 = 83,758.20/x
  3. Step 3: Cross multiply
    147,420.30x = 203,440.08 × 83,758.20
  4. Step 4: Simplify right side
    147,420.30x = 17,039,774,908.66
  5. Step 5: Solve for x
    x = 17,039,774,908.66/147,420.30
  6. Step 6: Final answer
    x = 115,586.35

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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.