Home / 128,153.09-176,859.45-71,564.46

Finding the Fourth Proportional to 128,153.09, 176,859.45 and 71,564.46

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Solution

The fourth proportional to 128,153.09, 176,859.45 and 71,564.46 is: 98,763.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,153.09 : 176,859.45 = 71,564.46 : x
  2. Step 2: Convert to fraction form
    128,153.09/176,859.45 = 71,564.46/x
  3. Step 3: Cross multiply
    128,153.09x = 176,859.45 × 71,564.46
  4. Step 4: Simplify right side
    128,153.09x = 12,656,851,035.15
  5. Step 5: Solve for x
    x = 12,656,851,035.15/128,153.09
  6. Step 6: Final answer
    x = 98,763.53

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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.