Home / 128,448.47-177,256.05-70,304.91

Finding the Fourth Proportional to 128,448.47, 177,256.05 and 70,304.91

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Solution

The fourth proportional to 128,448.47, 177,256.05 and 70,304.91 is: 97,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,448.47 : 177,256.05 = 70,304.91 : x
  2. Step 2: Convert to fraction form
    128,448.47/177,256.05 = 70,304.91/x
  3. Step 3: Cross multiply
    128,448.47x = 177,256.05 × 70,304.91
  4. Step 4: Simplify right side
    128,448.47x = 12,461,970,642.21
  5. Step 5: Solve for x
    x = 12,461,970,642.21/128,448.47
  6. Step 6: Final answer
    x = 97,019.23

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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.