Home / 153,729.29-212,146.70-85,750.65

Finding the Fourth Proportional to 153,729.29, 212,146.70 and 85,750.65

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Solution

The fourth proportional to 153,729.29, 212,146.70 and 85,750.65 is: 118,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,729.29 : 212,146.70 = 85,750.65 : x
  2. Step 2: Convert to fraction form
    153,729.29/212,146.70 = 85,750.65/x
  3. Step 3: Cross multiply
    153,729.29x = 212,146.70 × 85,750.65
  4. Step 4: Simplify right side
    153,729.29x = 18,191,716,991.60
  5. Step 5: Solve for x
    x = 18,191,716,991.60/153,729.29
  6. Step 6: Final answer
    x = 118,336.05

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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.