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Finding the Fourth Proportional to 107,756.70, 148,663.35 and 65,299.74

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Solution

The fourth proportional to 107,756.70, 148,663.35 and 65,299.74 is: 90,088.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,756.70 : 148,663.35 = 65,299.74 : x
  2. Step 2: Convert to fraction form
    107,756.70/148,663.35 = 65,299.74/x
  3. Step 3: Cross multiply
    107,756.70x = 148,663.35 × 65,299.74
  4. Step 4: Simplify right side
    107,756.70x = 9,707,678,102.53
  5. Step 5: Solve for x
    x = 9,707,678,102.53/107,756.70
  6. Step 6: Final answer
    x = 90,088.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.