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Finding the Fourth Proportional to 100,019.61, 137,962.04 and 64,152.81

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Solution

The fourth proportional to 100,019.61, 137,962.04 and 64,152.81 is: 88,489.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,019.61 : 137,962.04 = 64,152.81 : x
  2. Step 2: Convert to fraction form
    100,019.61/137,962.04 = 64,152.81/x
  3. Step 3: Cross multiply
    100,019.61x = 137,962.04 × 64,152.81
  4. Step 4: Simplify right side
    100,019.61x = 8,850,652,218.57
  5. Step 5: Solve for x
    x = 8,850,652,218.57/100,019.61
  6. Step 6: Final answer
    x = 88,489.17

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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.