Home / 105,307.16-145,307.05-59,986.00

Finding the Fourth Proportional to 105,307.16, 145,307.05 and 59,986.00

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Solution

The fourth proportional to 105,307.16, 145,307.05 and 59,986.00 is: 82,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,307.16 : 145,307.05 = 59,986.00 : x
  2. Step 2: Convert to fraction form
    105,307.16/145,307.05 = 59,986.00/x
  3. Step 3: Cross multiply
    105,307.16x = 145,307.05 × 59,986.00
  4. Step 4: Simplify right side
    105,307.16x = 8,716,388,732.97
  5. Step 5: Solve for x
    x = 8,716,388,732.97/105,307.16
  6. Step 6: Final answer
    x = 82,771.10

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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.