Home / 147,415.48-203,407.83-86,981.56

Finding the Fourth Proportional to 147,415.48, 203,407.83 and 86,981.56

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Solution

The fourth proportional to 147,415.48, 203,407.83 and 86,981.56 is: 120,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,415.48 : 203,407.83 = 86,981.56 : x
  2. Step 2: Convert to fraction form
    147,415.48/203,407.83 = 86,981.56/x
  3. Step 3: Cross multiply
    147,415.48x = 203,407.83 × 86,981.56
  4. Step 4: Simplify right side
    147,415.48x = 17,692,730,369.61
  5. Step 5: Solve for x
    x = 17,692,730,369.61/147,415.48
  6. Step 6: Final answer
    x = 120,019.49

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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.