Home / 210,153.49-289,673.03-142,145.65

Finding the Fourth Proportional to 210,153.49, 289,673.03 and 142,145.65

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Solution

The fourth proportional to 210,153.49, 289,673.03 and 142,145.65 is: 195,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,153.49 : 289,673.03 = 142,145.65 : x
  2. Step 2: Convert to fraction form
    210,153.49/289,673.03 = 142,145.65/x
  3. Step 3: Cross multiply
    210,153.49x = 289,673.03 × 142,145.65
  4. Step 4: Simplify right side
    210,153.49x = 41,175,761,054.71
  5. Step 5: Solve for x
    x = 41,175,761,054.71/210,153.49
  6. Step 6: Final answer
    x = 195,931.84

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1.5x scale

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.