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Finding the Fourth Proportional to 99,526.40, 149,289.60 and 57,478.40

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Solution

The fourth proportional to 99,526.40, 149,289.60 and 57,478.40 is: 86,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,526.40 : 149,289.60 = 57,478.40 : x
  2. Step 2: Convert to fraction form
    99,526.40/149,289.60 = 57,478.40/x
  3. Step 3: Cross multiply
    99,526.40x = 149,289.60 × 57,478.40
  4. Step 4: Simplify right side
    99,526.40x = 8,580,927,344.64
  5. Step 5: Solve for x
    x = 8,580,927,344.64/99,526.40
  6. Step 6: Final answer
    x = 86,217.60

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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.