Home / 138,810.60-208,215.90-59,869.80

Finding the Fourth Proportional to 138,810.60, 208,215.90 and 59,869.80

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Solution

The fourth proportional to 138,810.60, 208,215.90 and 59,869.80 is: 89,804.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.60 : 208,215.90 = 59,869.80 : x
  2. Step 2: Convert to fraction form
    138,810.60/208,215.90 = 59,869.80/x
  3. Step 3: Cross multiply
    138,810.60x = 208,215.90 × 59,869.80
  4. Step 4: Simplify right side
    138,810.60x = 12,465,844,289.82
  5. Step 5: Solve for x
    x = 12,465,844,289.82/138,810.60
  6. Step 6: Final answer
    x = 89,804.70

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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.