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Finding the Fourth Proportional to 97,188.40, 145,250.12 and 70,948.40

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Solution

The fourth proportional to 97,188.40, 145,250.12 and 70,948.40 is: 106,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,188.40 : 145,250.12 = 70,948.40 : x
  2. Step 2: Convert to fraction form
    97,188.40/145,250.12 = 70,948.40/x
  3. Step 3: Cross multiply
    97,188.40x = 145,250.12 × 70,948.40
  4. Step 4: Simplify right side
    97,188.40x = 10,305,263,976.93
  5. Step 5: Solve for x
    x = 10,305,263,976.93/97,188.40
  6. Step 6: Final answer
    x = 106,033.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.