Home / 153,664.18-212,055.69-85,681.97

Finding the Fourth Proportional to 153,664.18, 212,055.69 and 85,681.97

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Solution

The fourth proportional to 153,664.18, 212,055.69 and 85,681.97 is: 118,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,664.18 : 212,055.69 = 85,681.97 : x
  2. Step 2: Convert to fraction form
    153,664.18/212,055.69 = 85,681.97/x
  3. Step 3: Cross multiply
    153,664.18x = 212,055.69 × 85,681.97
  4. Step 4: Simplify right side
    153,664.18x = 18,169,348,899.42
  5. Step 5: Solve for x
    x = 18,169,348,899.42/153,664.18
  6. Step 6: Final answer
    x = 118,240.63

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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.