Home / 151,205.80-208,650.45-87,547.90

Finding the Fourth Proportional to 151,205.80, 208,650.45 and 87,547.90

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Solution

The fourth proportional to 151,205.80, 208,650.45 and 87,547.90 is: 120,808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,205.80 : 208,650.45 = 87,547.90 : x
  2. Step 2: Convert to fraction form
    151,205.80/208,650.45 = 87,547.90/x
  3. Step 3: Cross multiply
    151,205.80x = 208,650.45 × 87,547.90
  4. Step 4: Simplify right side
    151,205.80x = 18,266,908,731.56
  5. Step 5: Solve for x
    x = 18,266,908,731.56/151,205.80
  6. Step 6: Final answer
    x = 120,808.25

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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.