Home / 154,578.18-213,307.65-85,663.02

Finding the Fourth Proportional to 154,578.18, 213,307.65 and 85,663.02

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Solution

The fourth proportional to 154,578.18, 213,307.65 and 85,663.02 is: 118,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,578.18 : 213,307.65 = 85,663.02 : x
  2. Step 2: Convert to fraction form
    154,578.18/213,307.65 = 85,663.02/x
  3. Step 3: Cross multiply
    154,578.18x = 213,307.65 × 85,663.02
  4. Step 4: Simplify right side
    154,578.18x = 18,272,577,488.10
  5. Step 5: Solve for x
    x = 18,272,577,488.10/154,578.18
  6. Step 6: Final answer
    x = 118,209.29

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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.