Home / 153,570.21-211,934.10-89,928.51

Finding the Fourth Proportional to 153,570.21, 211,934.10 and 89,928.51

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Solution

The fourth proportional to 153,570.21, 211,934.10 and 89,928.51 is: 124,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,570.21 : 211,934.10 = 89,928.51 : x
  2. Step 2: Convert to fraction form
    153,570.21/211,934.10 = 89,928.51/x
  3. Step 3: Cross multiply
    153,570.21x = 211,934.10 × 89,928.51
  4. Step 4: Simplify right side
    153,570.21x = 19,058,917,831.19
  5. Step 5: Solve for x
    x = 19,058,917,831.19/153,570.21
  6. Step 6: Final answer
    x = 124,105.57

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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.