Home / 210,077.55-314,615.21-121,145.07

Finding the Fourth Proportional to 210,077.55, 314,615.21 and 121,145.07

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Solution

The fourth proportional to 210,077.55, 314,615.21 and 121,145.07 is: 181,428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,077.55 : 314,615.21 = 121,145.07 : x
  2. Step 2: Convert to fraction form
    210,077.55/314,615.21 = 121,145.07/x
  3. Step 3: Cross multiply
    210,077.55x = 314,615.21 × 121,145.07
  4. Step 4: Simplify right side
    210,077.55x = 38,114,081,032.79
  5. Step 5: Solve for x
    x = 38,114,081,032.79/210,077.55
  6. Step 6: Final answer
    x = 181,428.62

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1.5x scale

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.