Home / 103,513.23-155,159.10-53,543.01

Finding the Fourth Proportional to 103,513.23, 155,159.10 and 53,543.01

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Solution

The fourth proportional to 103,513.23, 155,159.10 and 53,543.01 is: 80,257.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,513.23 : 155,159.10 = 53,543.01 : x
  2. Step 2: Convert to fraction form
    103,513.23/155,159.10 = 53,543.01/x
  3. Step 3: Cross multiply
    103,513.23x = 155,159.10 × 53,543.01
  4. Step 4: Simplify right side
    103,513.23x = 8,307,685,242.89
  5. Step 5: Solve for x
    x = 8,307,685,242.89/103,513.23
  6. Step 6: Final answer
    x = 80,257.23

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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.