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Finding the Fourth Proportional to 91,065.60, 136,598.40 and 87,566.40

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Solution

The fourth proportional to 91,065.60, 136,598.40 and 87,566.40 is: 131,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,065.60 : 136,598.40 = 87,566.40 : x
  2. Step 2: Convert to fraction form
    91,065.60/136,598.40 = 87,566.40/x
  3. Step 3: Cross multiply
    91,065.60x = 136,598.40 × 87,566.40
  4. Step 4: Simplify right side
    91,065.60x = 11,961,430,133.76
  5. Step 5: Solve for x
    x = 11,961,430,133.76/91,065.60
  6. Step 6: Final answer
    x = 131,349.60

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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.