Home / 99,140.79-136,814.34-53,818.76

Finding the Fourth Proportional to 99,140.79, 136,814.34 and 53,818.76

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Solution

The fourth proportional to 99,140.79, 136,814.34 and 53,818.76 is: 74,269.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,140.79 : 136,814.34 = 53,818.76 : x
  2. Step 2: Convert to fraction form
    99,140.79/136,814.34 = 53,818.76/x
  3. Step 3: Cross multiply
    99,140.79x = 136,814.34 × 53,818.76
  4. Step 4: Simplify right side
    99,140.79x = 7,363,177,444.95
  5. Step 5: Solve for x
    x = 7,363,177,444.95/99,140.79
  6. Step 6: Final answer
    x = 74,269.91

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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.