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Finding the Fourth Proportional to 153,060.16, 211,213.92 and 85,990.72

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Solution

The fourth proportional to 153,060.16, 211,213.92 and 85,990.72 is: 118,662.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,060.16 : 211,213.92 = 85,990.72 : x
  2. Step 2: Convert to fraction form
    153,060.16/211,213.92 = 85,990.72/x
  3. Step 3: Cross multiply
    153,060.16x = 211,213.92 × 85,990.72
  4. Step 4: Simplify right side
    153,060.16x = 18,162,437,054.82
  5. Step 5: Solve for x
    x = 18,162,437,054.82/153,060.16
  6. Step 6: Final answer
    x = 118,662.08

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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.