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Finding the Fourth Proportional to 100,894.40, 151,341.60 and 89,813.60

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Solution

The fourth proportional to 100,894.40, 151,341.60 and 89,813.60 is: 134,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.40 : 151,341.60 = 89,813.60 : x
  2. Step 2: Convert to fraction form
    100,894.40/151,341.60 = 89,813.60/x
  3. Step 3: Cross multiply
    100,894.40x = 151,341.60 × 89,813.60
  4. Step 4: Simplify right side
    100,894.40x = 13,592,533,925.76
  5. Step 5: Solve for x
    x = 13,592,533,925.76/100,894.40
  6. Step 6: Final answer
    x = 134,720.40

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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.