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Finding the Fourth Proportional to 91,903.20, 137,854.80 and 25,353.60

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Solution

The fourth proportional to 91,903.20, 137,854.80 and 25,353.60 is: 38,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,903.20 : 137,854.80 = 25,353.60 : x
  2. Step 2: Convert to fraction form
    91,903.20/137,854.80 = 25,353.60/x
  3. Step 3: Cross multiply
    91,903.20x = 137,854.80 × 25,353.60
  4. Step 4: Simplify right side
    91,903.20x = 3,495,115,457.28
  5. Step 5: Solve for x
    x = 3,495,115,457.28/91,903.20
  6. Step 6: Final answer
    x = 38,030.40

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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.