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Finding the Fourth Proportional to 107,079.12, 147,768.12 and 58,681.47

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Solution

The fourth proportional to 107,079.12, 147,768.12 and 58,681.47 is: 80,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,079.12 : 147,768.12 = 58,681.47 : x
  2. Step 2: Convert to fraction form
    107,079.12/147,768.12 = 58,681.47/x
  3. Step 3: Cross multiply
    107,079.12x = 147,768.12 × 58,681.47
  4. Step 4: Simplify right side
    107,079.12x = 8,671,250,500.74
  5. Step 5: Solve for x
    x = 8,671,250,500.74/107,079.12
  6. Step 6: Final answer
    x = 80,979.84

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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.