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Finding the Fourth Proportional to 70,903.55, 99,133.75 and 70,903.55

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Solution

The fourth proportional to 70,903.55, 99,133.75 and 70,903.55 is: 99,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.55 : 99,133.75 = 70,903.55 : x
  2. Step 2: Convert to fraction form
    70,903.55/99,133.75 = 70,903.55/x
  3. Step 3: Cross multiply
    70,903.55x = 99,133.75 × 70,903.55
  4. Step 4: Simplify right side
    70,903.55x = 7,028,934,799.81
  5. Step 5: Solve for x
    x = 7,028,934,799.81/70,903.55
  6. Step 6: Final answer
    x = 99,133.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.