Home / 99,172.96-136,853.76-56,145.76

Finding the Fourth Proportional to 99,172.96, 136,853.76 and 56,145.76

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Solution

The fourth proportional to 99,172.96, 136,853.76 and 56,145.76 is: 77,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,172.96 : 136,853.76 = 56,145.76 : x
  2. Step 2: Convert to fraction form
    99,172.96/136,853.76 = 56,145.76/x
  3. Step 3: Cross multiply
    99,172.96x = 136,853.76 × 56,145.76
  4. Step 4: Simplify right side
    99,172.96x = 7,683,758,364.06
  5. Step 5: Solve for x
    x = 7,683,758,364.06/99,172.96
  6. Step 6: Final answer
    x = 77,478.36

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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.