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Finding the Fourth Proportional to 156,261.60, 215,643.60 and 88,264.80

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Solution

The fourth proportional to 156,261.60, 215,643.60 and 88,264.80 is: 121,806.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,261.60 : 215,643.60 = 88,264.80 : x
  2. Step 2: Convert to fraction form
    156,261.60/215,643.60 = 88,264.80/x
  3. Step 3: Cross multiply
    156,261.60x = 215,643.60 × 88,264.80
  4. Step 4: Simplify right side
    156,261.60x = 19,033,739,225.28
  5. Step 5: Solve for x
    x = 19,033,739,225.28/156,261.60
  6. Step 6: Final answer
    x = 121,806.89

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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.