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Finding the Fourth Proportional to 116,418.51, 160,655.40 and 64,738.80

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Solution

The fourth proportional to 116,418.51, 160,655.40 and 64,738.80 is: 89,338.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,418.51 : 160,655.40 = 64,738.80 : x
  2. Step 2: Convert to fraction form
    116,418.51/160,655.40 = 64,738.80/x
  3. Step 3: Cross multiply
    116,418.51x = 160,655.40 × 64,738.80
  4. Step 4: Simplify right side
    116,418.51x = 10,400,637,809.52
  5. Step 5: Solve for x
    x = 10,400,637,809.52/116,418.51
  6. Step 6: Final answer
    x = 89,338.35

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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.