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Finding the Fourth Proportional to 98,774.87, 148,133.68 and 70,459.43

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Solution

The fourth proportional to 98,774.87, 148,133.68 and 70,459.43 is: 105,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,774.87 : 148,133.68 = 70,459.43 : x
  2. Step 2: Convert to fraction form
    98,774.87/148,133.68 = 70,459.43/x
  3. Step 3: Cross multiply
    98,774.87x = 148,133.68 × 70,459.43
  4. Step 4: Simplify right side
    98,774.87x = 10,437,413,739.79
  5. Step 5: Solve for x
    x = 10,437,413,739.79/98,774.87
  6. Step 6: Final answer
    x = 105,668.72

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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.