Home / 160,485.94-221,701.29-128,178.14

Finding the Fourth Proportional to 160,485.94, 221,701.29 and 128,178.14

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Solution

The fourth proportional to 160,485.94, 221,701.29 and 128,178.14 is: 177,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,485.94 : 221,701.29 = 128,178.14 : x
  2. Step 2: Convert to fraction form
    160,485.94/221,701.29 = 128,178.14/x
  3. Step 3: Cross multiply
    160,485.94x = 221,701.29 × 128,178.14
  4. Step 4: Simplify right side
    160,485.94x = 28,417,258,987.80
  5. Step 5: Solve for x
    x = 28,417,258,987.80/160,485.94
  6. Step 6: Final answer
    x = 177,070.08

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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.