Home / 157,400.55-217,206.43-85,779.02

Finding the Fourth Proportional to 157,400.55, 217,206.43 and 85,779.02

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Solution

The fourth proportional to 157,400.55, 217,206.43 and 85,779.02 is: 118,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,400.55 : 217,206.43 = 85,779.02 : x
  2. Step 2: Convert to fraction form
    157,400.55/217,206.43 = 85,779.02/x
  3. Step 3: Cross multiply
    157,400.55x = 217,206.43 × 85,779.02
  4. Step 4: Simplify right side
    157,400.55x = 18,631,755,031.67
  5. Step 5: Solve for x
    x = 18,631,755,031.67/157,400.55
  6. Step 6: Final answer
    x = 118,371.60

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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.