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Finding the Fourth Proportional to 158,953.70, 238,430.55 and 85,225.70

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Solution

The fourth proportional to 158,953.70, 238,430.55 and 85,225.70 is: 127,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,953.70 : 238,430.55 = 85,225.70 : x
  2. Step 2: Convert to fraction form
    158,953.70/238,430.55 = 85,225.70/x
  3. Step 3: Cross multiply
    158,953.70x = 238,430.55 × 85,225.70
  4. Step 4: Simplify right side
    158,953.70x = 20,320,410,525.14
  5. Step 5: Solve for x
    x = 20,320,410,525.14/158,953.70
  6. Step 6: Final answer
    x = 127,838.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.