Home / 280,152.09-420,160.10-93,139.29

Finding the Fourth Proportional to 280,152.09, 420,160.10 and 93,139.29

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Solution

The fourth proportional to 280,152.09, 420,160.10 and 93,139.29 is: 139,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,152.09 : 420,160.10 = 93,139.29 : x
  2. Step 2: Convert to fraction form
    280,152.09/420,160.10 = 93,139.29/x
  3. Step 3: Cross multiply
    280,152.09x = 420,160.10 × 93,139.29
  4. Step 4: Simplify right side
    280,152.09x = 39,133,412,934.63
  5. Step 5: Solve for x
    x = 39,133,412,934.63/280,152.09
  6. Step 6: Final answer
    x = 139,686.31

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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.