Home / 131,109,639.68-180,931,338.84-72,372,342.80

Finding the Fourth Proportional to 131,109,639.68, 180,931,338.84 and 72,372,342.80

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Solution

The fourth proportional to 131,109,639.68, 180,931,338.84 and 72,372,342.80 is: 99,873,852.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,109,639.68 : 180,931,338.84 = 72,372,342.80 : x
  2. Step 2: Convert to fraction form
    131,109,639.68/180,931,338.84 = 72,372,342.80/x
  3. Step 3: Cross multiply
    131,109,639.68x = 180,931,338.84 × 72,372,342.80
  4. Step 4: Simplify right side
    131,109,639.68x = 13,094,424,877,791,434
  5. Step 5: Solve for x
    x = 13,094,424,877,791,434/131,109,639.68
  6. Step 6: Final answer
    x = 99,873,852.98

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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.