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Finding the Fourth Proportional to 158,699.66, 219,002.54 and 87,079.05

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Solution

The fourth proportional to 158,699.66, 219,002.54 and 87,079.05 is: 120,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,699.66 : 219,002.54 = 87,079.05 : x
  2. Step 2: Convert to fraction form
    158,699.66/219,002.54 = 87,079.05/x
  3. Step 3: Cross multiply
    158,699.66x = 219,002.54 × 87,079.05
  4. Step 4: Simplify right side
    158,699.66x = 19,070,532,695.39
  5. Step 5: Solve for x
    x = 19,070,532,695.39/158,699.66
  6. Step 6: Final answer
    x = 120,167.45

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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.