Home / 99,389.61-137,124.54-56,363.76

Finding the Fourth Proportional to 99,389.61, 137,124.54 and 56,363.76

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Solution

The fourth proportional to 99,389.61, 137,124.54 and 56,363.76 is: 77,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,389.61 : 137,124.54 = 56,363.76 : x
  2. Step 2: Convert to fraction form
    99,389.61/137,124.54 = 56,363.76/x
  3. Step 3: Cross multiply
    99,389.61x = 137,124.54 × 56,363.76
  4. Step 4: Simplify right side
    99,389.61x = 7,728,854,662.67
  5. Step 5: Solve for x
    x = 7,728,854,662.67/99,389.61
  6. Step 6: Final answer
    x = 77,763.21

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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.