Home / 153,428.04-211,730.49-89,778.11

Finding the Fourth Proportional to 153,428.04, 211,730.49 and 89,778.11

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Solution

The fourth proportional to 153,428.04, 211,730.49 and 89,778.11 is: 123,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,428.04 : 211,730.49 = 89,778.11 : x
  2. Step 2: Convert to fraction form
    153,428.04/211,730.49 = 89,778.11/x
  3. Step 3: Cross multiply
    153,428.04x = 211,730.49 × 89,778.11
  4. Step 4: Simplify right side
    153,428.04x = 19,008,762,162.92
  5. Step 5: Solve for x
    x = 19,008,762,162.92/153,428.04
  6. Step 6: Final answer
    x = 123,893.66

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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.