Home / 129,482,106-178,683,220.80-70,743,509.76

Finding the Fourth Proportional to 129,482,106, 178,683,220.80 and 70,743,509.76

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Solution

The fourth proportional to 129,482,106, 178,683,220.80 and 70,743,509.76 is: 97,624,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482,106 : 178,683,220.80 = 70,743,509.76 : x
  2. Step 2: Convert to fraction form
    129,482,106/178,683,220.80 = 70,743,509.76/x
  3. Step 3: Cross multiply
    129,482,106x = 178,683,220.80 × 70,743,509.76
  4. Step 4: Simplify right side
    129,482,106x = 12,640,678,174,613,036
  5. Step 5: Solve for x
    x = 12,640,678,174,613,036/129,482,106
  6. Step 6: Final answer
    x = 97,624,904.05

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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.