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Finding the Fourth Proportional to 99,207.60, 148,811.40 and 91,258.80

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Solution

The fourth proportional to 99,207.60, 148,811.40 and 91,258.80 is: 136,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,207.60 : 148,811.40 = 91,258.80 : x
  2. Step 2: Convert to fraction form
    99,207.60/148,811.40 = 91,258.80/x
  3. Step 3: Cross multiply
    99,207.60x = 148,811.40 × 91,258.80
  4. Step 4: Simplify right side
    99,207.60x = 13,580,349,790.32
  5. Step 5: Solve for x
    x = 13,580,349,790.32/99,207.60
  6. Step 6: Final answer
    x = 136,888.20

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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.