Home / 152,849.92-210,931.84-85,782.40

Finding the Fourth Proportional to 152,849.92, 210,931.84 and 85,782.40

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Solution

The fourth proportional to 152,849.92, 210,931.84 and 85,782.40 is: 118,379.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,849.92 : 210,931.84 = 85,782.40 : x
  2. Step 2: Convert to fraction form
    152,849.92/210,931.84 = 85,782.40/x
  3. Step 3: Cross multiply
    152,849.92x = 210,931.84 × 85,782.40
  4. Step 4: Simplify right side
    152,849.92x = 18,094,239,471.62
  5. Step 5: Solve for x
    x = 18,094,239,471.62/152,849.92
  6. Step 6: Final answer
    x = 118,379.12

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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.