Home / 157,295.04-216,878.49-128,508.05

Finding the Fourth Proportional to 157,295.04, 216,878.49 and 128,508.05

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Solution

The fourth proportional to 157,295.04, 216,878.49 and 128,508.05 is: 177,186.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,295.04 : 216,878.49 = 128,508.05 : x
  2. Step 2: Convert to fraction form
    157,295.04/216,878.49 = 128,508.05/x
  3. Step 3: Cross multiply
    157,295.04x = 216,878.49 × 128,508.05
  4. Step 4: Simplify right side
    157,295.04x = 27,870,630,752.45
  5. Step 5: Solve for x
    x = 27,870,630,752.45/157,295.04
  6. Step 6: Final answer
    x = 177,186.97

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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.