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Finding the Fourth Proportional to 105,434.68, 145,501.68 and 57,692.20

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Solution

The fourth proportional to 105,434.68, 145,501.68 and 57,692.20 is: 79,616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,434.68 : 145,501.68 = 57,692.20 : x
  2. Step 2: Convert to fraction form
    105,434.68/145,501.68 = 57,692.20/x
  3. Step 3: Cross multiply
    105,434.68x = 145,501.68 × 57,692.20
  4. Step 4: Simplify right side
    105,434.68x = 8,394,312,022.90
  5. Step 5: Solve for x
    x = 8,394,312,022.90/105,434.68
  6. Step 6: Final answer
    x = 79,616.23

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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.