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Finding the Fourth Proportional to 103,492.40, 142,752.12 and 84,599.60

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Solution

The fourth proportional to 103,492.40, 142,752.12 and 84,599.60 is: 116,692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,492.40 : 142,752.12 = 84,599.60 : x
  2. Step 2: Convert to fraction form
    103,492.40/142,752.12 = 84,599.60/x
  3. Step 3: Cross multiply
    103,492.40x = 142,752.12 × 84,599.60
  4. Step 4: Simplify right side
    103,492.40x = 12,076,772,251.15
  5. Step 5: Solve for x
    x = 12,076,772,251.15/103,492.40
  6. Step 6: Final answer
    x = 116,692.36

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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.