Home / 153,820.37-212,271.71-85,836.62

Finding the Fourth Proportional to 153,820.37, 212,271.71 and 85,836.62

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Solution

The fourth proportional to 153,820.37, 212,271.71 and 85,836.62 is: 118,454.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,820.37 : 212,271.71 = 85,836.62 : x
  2. Step 2: Convert to fraction form
    153,820.37/212,271.71 = 85,836.62/x
  3. Step 3: Cross multiply
    153,820.37x = 212,271.71 × 85,836.62
  4. Step 4: Simplify right side
    153,820.37x = 18,220,686,853.29
  5. Step 5: Solve for x
    x = 18,220,686,853.29/153,820.37
  6. Step 6: Final answer
    x = 118,454.32

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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.