Home / 151,205.30-208,649.76-87,547.40

Finding the Fourth Proportional to 151,205.30, 208,649.76 and 87,547.40

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Solution

The fourth proportional to 151,205.30, 208,649.76 and 87,547.40 is: 120,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,205.30 : 208,649.76 = 87,547.40 : x
  2. Step 2: Convert to fraction form
    151,205.30/208,649.76 = 87,547.40/x
  3. Step 3: Cross multiply
    151,205.30x = 208,649.76 × 87,547.40
  4. Step 4: Simplify right side
    151,205.30x = 18,266,743,998.62
  5. Step 5: Solve for x
    x = 18,266,743,998.62/151,205.30
  6. Step 6: Final answer
    x = 120,807.56

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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.