Home / 136,916.40-205,285.80-58,009.20

Finding the Fourth Proportional to 136,916.40, 205,285.80 and 58,009.20

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Solution

The fourth proportional to 136,916.40, 205,285.80 and 58,009.20 is: 86,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,916.40 : 205,285.80 = 58,009.20 : x
  2. Step 2: Convert to fraction form
    136,916.40/205,285.80 = 58,009.20/x
  3. Step 3: Cross multiply
    136,916.40x = 205,285.80 × 58,009.20
  4. Step 4: Simplify right side
    136,916.40x = 11,908,465,029.36
  5. Step 5: Solve for x
    x = 11,908,465,029.36/136,916.40
  6. Step 6: Final answer
    x = 86,976.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.