Home / 151,368.18-208,856.13-87,702.10

Finding the Fourth Proportional to 151,368.18, 208,856.13 and 87,702.10

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Solution

The fourth proportional to 151,368.18, 208,856.13 and 87,702.10 is: 121,010.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,368.18 : 208,856.13 = 87,702.10 : x
  2. Step 2: Convert to fraction form
    151,368.18/208,856.13 = 87,702.10/x
  3. Step 3: Cross multiply
    151,368.18x = 208,856.13 × 87,702.10
  4. Step 4: Simplify right side
    151,368.18x = 18,317,121,198.87
  5. Step 5: Solve for x
    x = 18,317,121,198.87/151,368.18
  6. Step 6: Final answer
    x = 121,010.38

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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.