Home / 105,206.55-145,183.95-57,459.90

Finding the Fourth Proportional to 105,206.55, 145,183.95 and 57,459.90

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Solution

The fourth proportional to 105,206.55, 145,183.95 and 57,459.90 is: 79,294.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,206.55 : 145,183.95 = 57,459.90 : x
  2. Step 2: Convert to fraction form
    105,206.55/145,183.95 = 57,459.90/x
  3. Step 3: Cross multiply
    105,206.55x = 145,183.95 × 57,459.90
  4. Step 4: Simplify right side
    105,206.55x = 8,342,255,248.61
  5. Step 5: Solve for x
    x = 8,342,255,248.61/105,206.55
  6. Step 6: Final answer
    x = 79,294.07

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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.