Home / 99,109.32-136,737.36-56,637.60

Finding the Fourth Proportional to 99,109.32, 136,737.36 and 56,637.60

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Solution

The fourth proportional to 99,109.32, 136,737.36 and 56,637.60 is: 78,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,109.32 : 136,737.36 = 56,637.60 : x
  2. Step 2: Convert to fraction form
    99,109.32/136,737.36 = 56,637.60/x
  3. Step 3: Cross multiply
    99,109.32x = 136,737.36 × 56,637.60
  4. Step 4: Simplify right side
    99,109.32x = 7,744,475,900.74
  5. Step 5: Solve for x
    x = 7,744,475,900.74/99,109.32
  6. Step 6: Final answer
    x = 78,140.74

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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.