Home / 289,666.30-434,531.85-89,985.10

Finding the Fourth Proportional to 289,666.30, 434,531.85 and 89,985.10

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Solution

The fourth proportional to 289,666.30, 434,531.85 and 89,985.10 is: 134,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,666.30 : 434,531.85 = 89,985.10 : x
  2. Step 2: Convert to fraction form
    289,666.30/434,531.85 = 89,985.10/x
  3. Step 3: Cross multiply
    289,666.30x = 434,531.85 × 89,985.10
  4. Step 4: Simplify right side
    289,666.30x = 39,101,391,975.44
  5. Step 5: Solve for x
    x = 39,101,391,975.44/289,666.30
  6. Step 6: Final answer
    x = 134,987.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.