Home / 210,111.60-289,841.76-142,039.20

Finding the Fourth Proportional to 210,111.60, 289,841.76 and 142,039.20

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Solution

The fourth proportional to 210,111.60, 289,841.76 and 142,039.20 is: 195,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,111.60 : 289,841.76 = 142,039.20 : x
  2. Step 2: Convert to fraction form
    210,111.60/289,841.76 = 142,039.20/x
  3. Step 3: Cross multiply
    210,111.60x = 289,841.76 × 142,039.20
  4. Step 4: Simplify right side
    210,111.60x = 41,168,891,716.99
  5. Step 5: Solve for x
    x = 41,168,891,716.99/210,111.60
  6. Step 6: Final answer
    x = 195,938.21

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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.