Home / 153,690.89-212,094.65-85,712.24

Finding the Fourth Proportional to 153,690.89, 212,094.65 and 85,712.24

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Solution

The fourth proportional to 153,690.89, 212,094.65 and 85,712.24 is: 118,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,690.89 : 212,094.65 = 85,712.24 : x
  2. Step 2: Convert to fraction form
    153,690.89/212,094.65 = 85,712.24/x
  3. Step 3: Cross multiply
    153,690.89x = 212,094.65 × 85,712.24
  4. Step 4: Simplify right side
    153,690.89x = 18,179,108,288.03
  5. Step 5: Solve for x
    x = 18,179,108,288.03/153,690.89
  6. Step 6: Final answer
    x = 118,283.58

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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.