Home / 153,680.23-212,079.40-85,697.00

Finding the Fourth Proportional to 153,680.23, 212,079.40 and 85,697.00

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Solution

The fourth proportional to 153,680.23, 212,079.40 and 85,697.00 is: 118,262.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,680.23 : 212,079.40 = 85,697.00 : x
  2. Step 2: Convert to fraction form
    153,680.23/212,079.40 = 85,697.00/x
  3. Step 3: Cross multiply
    153,680.23x = 212,079.40 × 85,697.00
  4. Step 4: Simplify right side
    153,680.23x = 18,174,567,862.46
  5. Step 5: Solve for x
    x = 18,174,567,862.46/153,680.23
  6. Step 6: Final answer
    x = 118,262.24

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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.