Home / 124,428.60-186,686.10-54,329.40

Finding the Fourth Proportional to 124,428.60, 186,686.10 and 54,329.40

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Solution

The fourth proportional to 124,428.60, 186,686.10 and 54,329.40 is: 81,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,428.60 : 186,686.10 = 54,329.40 : x
  2. Step 2: Convert to fraction form
    124,428.60/186,686.10 = 54,329.40/x
  3. Step 3: Cross multiply
    124,428.60x = 186,686.10 × 54,329.40
  4. Step 4: Simplify right side
    124,428.60x = 10,142,543,801.34
  5. Step 5: Solve for x
    x = 10,142,543,801.34/124,428.60
  6. Step 6: Final answer
    x = 81,512.96

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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.