Home / 289,637.10-434,455.65-89,955.90

Finding the Fourth Proportional to 289,637.10, 434,455.65 and 89,955.90

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Solution

The fourth proportional to 289,637.10, 434,455.65 and 89,955.90 is: 134,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,637.10 : 434,455.65 = 89,955.90 : x
  2. Step 2: Convert to fraction form
    289,637.10/434,455.65 = 89,955.90/x
  3. Step 3: Cross multiply
    289,637.10x = 434,455.65 × 89,955.90
  4. Step 4: Simplify right side
    289,637.10x = 39,081,849,005.84
  5. Step 5: Solve for x
    x = 39,081,849,005.84/289,637.10
  6. Step 6: Final answer
    x = 134,933.85

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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.