Home / 128,045.12-192,060.41-39,298.50

Finding the Fourth Proportional to 128,045.12, 192,060.41 and 39,298.50

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Solution

The fourth proportional to 128,045.12, 192,060.41 and 39,298.50 is: 58,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.12 : 192,060.41 = 39,298.50 : x
  2. Step 2: Convert to fraction form
    128,045.12/192,060.41 = 39,298.50/x
  3. Step 3: Cross multiply
    128,045.12x = 192,060.41 × 39,298.50
  4. Step 4: Simplify right side
    128,045.12x = 7,547,685,825.89
  5. Step 5: Solve for x
    x = 7,547,685,825.89/128,045.12
  6. Step 6: Final answer
    x = 58,945.52

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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.