Home / 160,486.44-221,701.98-128,178.64

Finding the Fourth Proportional to 160,486.44, 221,701.98 and 128,178.64

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Solution

The fourth proportional to 160,486.44, 221,701.98 and 128,178.64 is: 177,070.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,486.44 : 221,701.98 = 128,178.64 : x
  2. Step 2: Convert to fraction form
    160,486.44/221,701.98 = 128,178.64/x
  3. Step 3: Cross multiply
    160,486.44x = 221,701.98 × 128,178.64
  4. Step 4: Simplify right side
    160,486.44x = 28,417,458,281.71
  5. Step 5: Solve for x
    x = 28,417,458,281.71/160,486.44
  6. Step 6: Final answer
    x = 177,070.77

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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.