Home / 208,179,106.80-312,044,711.40-78,736,700.40

Finding the Fourth Proportional to 208,179,106.80, 312,044,711.40 and 78,736,700.40

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Solution

The fourth proportional to 208,179,106.80, 312,044,711.40 and 78,736,700.40 is: 118,020,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,106.80 : 312,044,711.40 = 78,736,700.40 : x
  2. Step 2: Convert to fraction form
    208,179,106.80/312,044,711.40 = 78,736,700.40/x
  3. Step 3: Cross multiply
    208,179,106.80x = 312,044,711.40 × 78,736,700.40
  4. Step 4: Simplify right side
    208,179,106.80x = 24,569,370,952,906,264
  5. Step 5: Solve for x
    x = 24,569,370,952,906,264/208,179,106.80
  6. Step 6: Final answer
    x = 118,020,349.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.