Home / 142,184.84-196,216.05-77,652.45

Finding the Fourth Proportional to 142,184.84, 196,216.05 and 77,652.45

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Solution

The fourth proportional to 142,184.84, 196,216.05 and 77,652.45 is: 107,160.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,184.84 : 196,216.05 = 77,652.45 : x
  2. Step 2: Convert to fraction form
    142,184.84/196,216.05 = 77,652.45/x
  3. Step 3: Cross multiply
    142,184.84x = 196,216.05 × 77,652.45
  4. Step 4: Simplify right side
    142,184.84x = 15,236,657,011.82
  5. Step 5: Solve for x
    x = 15,236,657,011.82/142,184.84
  6. Step 6: Final answer
    x = 107,160.91

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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.