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Finding the Fourth Proportional to 103,692.30, 155,538.45 and 101,388.30

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Solution

The fourth proportional to 103,692.30, 155,538.45 and 101,388.30 is: 152,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.30 : 155,538.45 = 101,388.30 : x
  2. Step 2: Convert to fraction form
    103,692.30/155,538.45 = 101,388.30/x
  3. Step 3: Cross multiply
    103,692.30x = 155,538.45 × 101,388.30
  4. Step 4: Simplify right side
    103,692.30x = 15,769,779,030.14
  5. Step 5: Solve for x
    x = 15,769,779,030.14/103,692.30
  6. Step 6: Final answer
    x = 152,082.45

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1.5x scale

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.