Home / 158,985.69-219,397.77-87,364.17

Finding the Fourth Proportional to 158,985.69, 219,397.77 and 87,364.17

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Solution

The fourth proportional to 158,985.69, 219,397.77 and 87,364.17 is: 120,561.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,985.69 : 219,397.77 = 87,364.17 : x
  2. Step 2: Convert to fraction form
    158,985.69/219,397.77 = 87,364.17/x
  3. Step 3: Cross multiply
    158,985.69x = 219,397.77 × 87,364.17
  4. Step 4: Simplify right side
    158,985.69x = 19,167,504,075.90
  5. Step 5: Solve for x
    x = 19,167,504,075.90/158,985.69
  6. Step 6: Final answer
    x = 120,561.19

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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.