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Finding the Fourth Proportional to 99,547.45, 137,403.71 and 65,580.73

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Solution

The fourth proportional to 99,547.45, 137,403.71 and 65,580.73 is: 90,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,547.45 : 137,403.71 = 65,580.73 : x
  2. Step 2: Convert to fraction form
    99,547.45/137,403.71 = 65,580.73/x
  3. Step 3: Cross multiply
    99,547.45x = 137,403.71 × 65,580.73
  4. Step 4: Simplify right side
    99,547.45x = 9,011,035,606.51
  5. Step 5: Solve for x
    x = 9,011,035,606.51/99,547.45
  6. Step 6: Final answer
    x = 90,520.00

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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.