Home / 122,386.60-183,646.80-47,509.72

Finding the Fourth Proportional to 122,386.60, 183,646.80 and 47,509.72

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Solution

The fourth proportional to 122,386.60, 183,646.80 and 47,509.72 is: 71,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,386.60 : 183,646.80 = 47,509.72 : x
  2. Step 2: Convert to fraction form
    122,386.60/183,646.80 = 47,509.72/x
  3. Step 3: Cross multiply
    122,386.60x = 183,646.80 × 47,509.72
  4. Step 4: Simplify right side
    122,386.60x = 8,725,008,046.90
  5. Step 5: Solve for x
    x = 8,725,008,046.90/122,386.60
  6. Step 6: Final answer
    x = 71,290.55

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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.