Home / 155,397.27-214,467.21-87,417.11

Finding the Fourth Proportional to 155,397.27, 214,467.21 and 87,417.11

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Solution

The fourth proportional to 155,397.27, 214,467.21 and 87,417.11 is: 120,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,397.27 : 214,467.21 = 87,417.11 : x
  2. Step 2: Convert to fraction form
    155,397.27/214,467.21 = 87,417.11/x
  3. Step 3: Cross multiply
    155,397.27x = 214,467.21 × 87,417.11
  4. Step 4: Simplify right side
    155,397.27x = 18,748,103,687.96
  5. Step 5: Solve for x
    x = 18,748,103,687.96/155,397.27
  6. Step 6: Final answer
    x = 120,646.29

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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.