Home / 86,888.40-130,113.90-57,145.20

Finding the Fourth Proportional to 86,888.40, 130,113.90 and 57,145.20

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Solution

The fourth proportional to 86,888.40, 130,113.90 and 57,145.20 is: 85,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,888.40 : 130,113.90 = 57,145.20 : x
  2. Step 2: Convert to fraction form
    86,888.40/130,113.90 = 57,145.20/x
  3. Step 3: Cross multiply
    86,888.40x = 130,113.90 × 57,145.20
  4. Step 4: Simplify right side
    86,888.40x = 7,435,384,838.28
  5. Step 5: Solve for x
    x = 7,435,384,838.28/86,888.40
  6. Step 6: Final answer
    x = 85,573.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.