Home / 105,139.68-145,087.67-59,813.39

Finding the Fourth Proportional to 105,139.68, 145,087.67 and 59,813.39

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Solution

The fourth proportional to 105,139.68, 145,087.67 and 59,813.39 is: 82,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,139.68 : 145,087.67 = 59,813.39 : x
  2. Step 2: Convert to fraction form
    105,139.68/145,087.67 = 59,813.39/x
  3. Step 3: Cross multiply
    105,139.68x = 145,087.67 × 59,813.39
  4. Step 4: Simplify right side
    105,139.68x = 8,678,184,365.40
  5. Step 5: Solve for x
    x = 8,678,184,365.40/105,139.68
  6. Step 6: Final answer
    x = 82,539.57

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1.5x scale

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.