Home / 103,415.91-142,729.40-63,153.01

Finding the Fourth Proportional to 103,415.91, 142,729.40 and 63,153.01

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Solution

The fourth proportional to 103,415.91, 142,729.40 and 63,153.01 is: 87,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,415.91 : 142,729.40 = 63,153.01 : x
  2. Step 2: Convert to fraction form
    103,415.91/142,729.40 = 63,153.01/x
  3. Step 3: Cross multiply
    103,415.91x = 142,729.40 × 63,153.01
  4. Step 4: Simplify right side
    103,415.91x = 9,013,791,225.49
  5. Step 5: Solve for x
    x = 9,013,791,225.49/103,415.91
  6. Step 6: Final answer
    x = 87,160.59

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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.