Home / 151,005.60-208,418.40-87,350.40

Finding the Fourth Proportional to 151,005.60, 208,418.40 and 87,350.40

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Solution

The fourth proportional to 151,005.60, 208,418.40 and 87,350.40 is: 120,561.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,005.60 : 208,418.40 = 87,350.40 : x
  2. Step 2: Convert to fraction form
    151,005.60/208,418.40 = 87,350.40/x
  3. Step 3: Cross multiply
    151,005.60x = 208,418.40 × 87,350.40
  4. Step 4: Simplify right side
    151,005.60x = 18,205,430,607.36
  5. Step 5: Solve for x
    x = 18,205,430,607.36/151,005.60
  6. Step 6: Final answer
    x = 120,561.29

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1.5x scale

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.