Home / 103,538.60-142,848.92-84,385.47

Finding the Fourth Proportional to 103,538.60, 142,848.92 and 84,385.47

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Solution

The fourth proportional to 103,538.60, 142,848.92 and 84,385.47 is: 116,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,538.60 : 142,848.92 = 84,385.47 : x
  2. Step 2: Convert to fraction form
    103,538.60/142,848.92 = 84,385.47/x
  3. Step 3: Cross multiply
    103,538.60x = 142,848.92 × 84,385.47
  4. Step 4: Simplify right side
    103,538.60x = 12,054,372,928.47
  5. Step 5: Solve for x
    x = 12,054,372,928.47/103,538.60
  6. Step 6: Final answer
    x = 116,423.95

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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.