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Finding the Fourth Proportional to 109,439.60, 151,026.60 and 59,138.60

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Solution

The fourth proportional to 109,439.60, 151,026.60 and 59,138.60 is: 81,611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,439.60 : 151,026.60 = 59,138.60 : x
  2. Step 2: Convert to fraction form
    109,439.60/151,026.60 = 59,138.60/x
  3. Step 3: Cross multiply
    109,439.60x = 151,026.60 × 59,138.60
  4. Step 4: Simplify right side
    109,439.60x = 8,931,501,686.76
  5. Step 5: Solve for x
    x = 8,931,501,686.76/109,439.60
  6. Step 6: Final answer
    x = 81,611.24

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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.