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Finding the Fourth Proportional to 99,008.80, 136,599.78 and 63,210.40

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Solution

The fourth proportional to 99,008.80, 136,599.78 and 63,210.40 is: 87,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,008.80 : 136,599.78 = 63,210.40 : x
  2. Step 2: Convert to fraction form
    99,008.80/136,599.78 = 63,210.40/x
  3. Step 3: Cross multiply
    99,008.80x = 136,599.78 × 63,210.40
  4. Step 4: Simplify right side
    99,008.80x = 8,634,526,733.71
  5. Step 5: Solve for x
    x = 8,634,526,733.71/99,008.80
  6. Step 6: Final answer
    x = 87,209.69

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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.