Home / 147,389.55-203,339.84-90,702.51

Finding the Fourth Proportional to 147,389.55, 203,339.84 and 90,702.51

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Solution

The fourth proportional to 147,389.55, 203,339.84 and 90,702.51 is: 125,133.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,389.55 : 203,339.84 = 90,702.51 : x
  2. Step 2: Convert to fraction form
    147,389.55/203,339.84 = 90,702.51/x
  3. Step 3: Cross multiply
    147,389.55x = 203,339.84 × 90,702.51
  4. Step 4: Simplify right side
    147,389.55x = 18,443,433,871.00
  5. Step 5: Solve for x
    x = 18,443,433,871.00/147,389.55
  6. Step 6: Final answer
    x = 125,133.93

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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.