Home / 129,502,314-178,711,025.76-70,763,624.28

Finding the Fourth Proportional to 129,502,314, 178,711,025.76 and 70,763,624.28

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Solution

The fourth proportional to 129,502,314, 178,711,025.76 and 70,763,624.28 is: 97,652,617.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,502,314 : 178,711,025.76 = 70,763,624.28 : x
  2. Step 2: Convert to fraction form
    129,502,314/178,711,025.76 = 70,763,624.28/x
  3. Step 3: Cross multiply
    129,502,314x = 178,711,025.76 × 70,763,624.28
  4. Step 4: Simplify right side
    129,502,314x = 12,646,239,881,574,040
  5. Step 5: Solve for x
    x = 12,646,239,881,574,040/129,502,314
  6. Step 6: Final answer
    x = 97,652,617.09

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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.