Home / 153,416.18-211,663.59-89,708.87

Finding the Fourth Proportional to 153,416.18, 211,663.59 and 89,708.87

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Solution

The fourth proportional to 153,416.18, 211,663.59 and 89,708.87 is: 123,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,416.18 : 211,663.59 = 89,708.87 : x
  2. Step 2: Convert to fraction form
    153,416.18/211,663.59 = 89,708.87/x
  3. Step 3: Cross multiply
    153,416.18x = 211,663.59 × 89,708.87
  4. Step 4: Simplify right side
    153,416.18x = 18,988,101,479.04
  5. Step 5: Solve for x
    x = 18,988,101,479.04/153,416.18
  6. Step 6: Final answer
    x = 123,768.57

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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.