Home / 128,036.43-176,690.31-70,675.79

Finding the Fourth Proportional to 128,036.43, 176,690.31 and 70,675.79

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Solution

The fourth proportional to 128,036.43, 176,690.31 and 70,675.79 is: 97,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.43 : 176,690.31 = 70,675.79 : x
  2. Step 2: Convert to fraction form
    128,036.43/176,690.31 = 70,675.79/x
  3. Step 3: Cross multiply
    128,036.43x = 176,690.31 × 70,675.79
  4. Step 4: Simplify right side
    128,036.43x = 12,487,726,313.52
  5. Step 5: Solve for x
    x = 12,487,726,313.52/128,036.43
  6. Step 6: Final answer
    x = 97,532.60

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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.