Home / 153,681.26-212,083.90-85,697.58

Finding the Fourth Proportional to 153,681.26, 212,083.90 and 85,697.58

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Solution

The fourth proportional to 153,681.26, 212,083.90 and 85,697.58 is: 118,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,681.26 : 212,083.90 = 85,697.58 : x
  2. Step 2: Convert to fraction form
    153,681.26/212,083.90 = 85,697.58/x
  3. Step 3: Cross multiply
    153,681.26x = 212,083.90 × 85,697.58
  4. Step 4: Simplify right side
    153,681.26x = 18,175,076,986.96
  5. Step 5: Solve for x
    x = 18,175,076,986.96/153,681.26
  6. Step 6: Final answer
    x = 118,264.76

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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.