Home / 236,402.96-326,229-128,975.12

Finding the Fourth Proportional to 236,402.96, 326,229 and 128,975.12

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Solution

The fourth proportional to 236,402.96, 326,229 and 128,975.12 is: 177,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,402.96 : 326,229 = 128,975.12 : x
  2. Step 2: Convert to fraction form
    236,402.96/326,229 = 128,975.12/x
  3. Step 3: Cross multiply
    236,402.96x = 326,229 × 128,975.12
  4. Step 4: Simplify right side
    236,402.96x = 42,075,424,422.48
  5. Step 5: Solve for x
    x = 42,075,424,422.48/236,402.96
  6. Step 6: Final answer
    x = 177,981.80

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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.