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Finding the Fourth Proportional to 123,071.70, 184,607.55 and 70,437.90

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Solution

The fourth proportional to 123,071.70, 184,607.55 and 70,437.90 is: 105,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,071.70 : 184,607.55 = 70,437.90 : x
  2. Step 2: Convert to fraction form
    123,071.70/184,607.55 = 70,437.90/x
  3. Step 3: Cross multiply
    123,071.70x = 184,607.55 × 70,437.90
  4. Step 4: Simplify right side
    123,071.70x = 13,003,368,146.15
  5. Step 5: Solve for x
    x = 13,003,368,146.15/123,071.70
  6. Step 6: Final answer
    x = 105,656.85

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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.