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Finding the Fourth Proportional to 107,089.44, 159,931.02 and 86,061.48

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Solution

The fourth proportional to 107,089.44, 159,931.02 and 86,061.48 is: 128,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,089.44 : 159,931.02 = 86,061.48 : x
  2. Step 2: Convert to fraction form
    107,089.44/159,931.02 = 86,061.48/x
  3. Step 3: Cross multiply
    107,089.44x = 159,931.02 × 86,061.48
  4. Step 4: Simplify right side
    107,089.44x = 13,763,900,279.11
  5. Step 5: Solve for x
    x = 13,763,900,279.11/107,089.44
  6. Step 6: Final answer
    x = 128,527.15

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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.