Home / 99,330.04-136,981.47-63,457.78

Finding the Fourth Proportional to 99,330.04, 136,981.47 and 63,457.78

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Solution

The fourth proportional to 99,330.04, 136,981.47 and 63,457.78 is: 87,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,330.04 : 136,981.47 = 63,457.78 : x
  2. Step 2: Convert to fraction form
    99,330.04/136,981.47 = 63,457.78/x
  3. Step 3: Cross multiply
    99,330.04x = 136,981.47 × 63,457.78
  4. Step 4: Simplify right side
    99,330.04x = 8,692,539,987.34
  5. Step 5: Solve for x
    x = 8,692,539,987.34/99,330.04
  6. Step 6: Final answer
    x = 87,511.69

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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.