Home / 131,127.41-180,956.51-77,438.88

Finding the Fourth Proportional to 131,127.41, 180,956.51 and 77,438.88

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Solution

The fourth proportional to 131,127.41, 180,956.51 and 77,438.88 is: 106,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,127.41 : 180,956.51 = 77,438.88 : x
  2. Step 2: Convert to fraction form
    131,127.41/180,956.51 = 77,438.88/x
  3. Step 3: Cross multiply
    131,127.41x = 180,956.51 × 77,438.88
  4. Step 4: Simplify right side
    131,127.41x = 14,013,069,075.91
  5. Step 5: Solve for x
    x = 14,013,069,075.91/131,127.41
  6. Step 6: Final answer
    x = 106,866.06

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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.