Home / 160,320.21-221,233.77-87,721.53

Finding the Fourth Proportional to 160,320.21, 221,233.77 and 87,721.53

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Solution

The fourth proportional to 160,320.21, 221,233.77 and 87,721.53 is: 121,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,320.21 : 221,233.77 = 87,721.53 : x
  2. Step 2: Convert to fraction form
    160,320.21/221,233.77 = 87,721.53/x
  3. Step 3: Cross multiply
    160,320.21x = 221,233.77 × 87,721.53
  4. Step 4: Simplify right side
    160,320.21x = 19,406,964,792.07
  5. Step 5: Solve for x
    x = 19,406,964,792.07/160,320.21
  6. Step 6: Final answer
    x = 121,051.27

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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.