Home / 157,398,429.68-235,781,455.32-78,376,871.12

Finding the Fourth Proportional to 157,398,429.68, 235,781,455.32 and 78,376,871.12

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Solution

The fourth proportional to 157,398,429.68, 235,781,455.32 and 78,376,871.12 is: 117,407,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,398,429.68 : 235,781,455.32 = 78,376,871.12 : x
  2. Step 2: Convert to fraction form
    157,398,429.68/235,781,455.32 = 78,376,871.12/x
  3. Step 3: Cross multiply
    157,398,429.68x = 235,781,455.32 × 78,376,871.12
  4. Step 4: Simplify right side
    157,398,429.68x = 18,479,812,736,101,680
  5. Step 5: Solve for x
    x = 18,479,812,736,101,680/157,398,429.68
  6. Step 6: Final answer
    x = 117,407,859.62

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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.