Home / 105,206.72-145,186.08-57,459.20

Finding the Fourth Proportional to 105,206.72, 145,186.08 and 57,459.20

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Solution

The fourth proportional to 105,206.72, 145,186.08 and 57,459.20 is: 79,294.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,206.72 : 145,186.08 = 57,459.20 : x
  2. Step 2: Convert to fraction form
    105,206.72/145,186.08 = 57,459.20/x
  3. Step 3: Cross multiply
    105,206.72x = 145,186.08 × 57,459.20
  4. Step 4: Simplify right side
    105,206.72x = 8,342,276,007.94
  5. Step 5: Solve for x
    x = 8,342,276,007.94/105,206.72
  6. Step 6: Final answer
    x = 79,294.14

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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.