Home / 128,119.47-176,802.17-70,755.45

Finding the Fourth Proportional to 128,119.47, 176,802.17 and 70,755.45

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Solution

The fourth proportional to 128,119.47, 176,802.17 and 70,755.45 is: 97,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,119.47 : 176,802.17 = 70,755.45 : x
  2. Step 2: Convert to fraction form
    128,119.47/176,802.17 = 70,755.45/x
  3. Step 3: Cross multiply
    128,119.47x = 176,802.17 × 70,755.45
  4. Step 4: Simplify right side
    128,119.47x = 12,509,716,778.80
  5. Step 5: Solve for x
    x = 12,509,716,778.80/128,119.47
  6. Step 6: Final answer
    x = 97,641.03

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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.