Home / 163,565.70-245,348.55-128,136.30

Finding the Fourth Proportional to 163,565.70, 245,348.55 and 128,136.30

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Solution

The fourth proportional to 163,565.70, 245,348.55 and 128,136.30 is: 192,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,565.70 : 245,348.55 = 128,136.30 : x
  2. Step 2: Convert to fraction form
    163,565.70/245,348.55 = 128,136.30/x
  3. Step 3: Cross multiply
    163,565.70x = 245,348.55 × 128,136.30
  4. Step 4: Simplify right side
    163,565.70x = 31,438,055,407.37
  5. Step 5: Solve for x
    x = 31,438,055,407.37/163,565.70
  6. Step 6: Final answer
    x = 192,204.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.