Home / 157,145.15-216,860.30-85,525.68

Finding the Fourth Proportional to 157,145.15, 216,860.30 and 85,525.68

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Solution

The fourth proportional to 157,145.15, 216,860.30 and 85,525.68 is: 118,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,145.15 : 216,860.30 = 85,525.68 : x
  2. Step 2: Convert to fraction form
    157,145.15/216,860.30 = 85,525.68/x
  3. Step 3: Cross multiply
    157,145.15x = 216,860.30 × 85,525.68
  4. Step 4: Simplify right side
    157,145.15x = 18,547,124,194.88
  5. Step 5: Solve for x
    x = 18,547,124,194.88/157,145.15
  6. Step 6: Final answer
    x = 118,025.44

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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.