Home / 157,345.15-217,136.32-85,725.16

Finding the Fourth Proportional to 157,345.15, 217,136.32 and 85,725.16

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Solution

The fourth proportional to 157,345.15, 217,136.32 and 85,725.16 is: 118,300.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,345.15 : 217,136.32 = 85,725.16 : x
  2. Step 2: Convert to fraction form
    157,345.15/217,136.32 = 85,725.16/x
  3. Step 3: Cross multiply
    157,345.15x = 217,136.32 × 85,725.16
  4. Step 4: Simplify right side
    157,345.15x = 18,614,044,259.50
  5. Step 5: Solve for x
    x = 18,614,044,259.50/157,345.15
  6. Step 6: Final answer
    x = 118,300.72

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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.