Home / 157,639.10-217,536.13-86,017.58

Finding the Fourth Proportional to 157,639.10, 217,536.13 and 86,017.58

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Solution

The fourth proportional to 157,639.10, 217,536.13 and 86,017.58 is: 118,701.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,639.10 : 217,536.13 = 86,017.58 : x
  2. Step 2: Convert to fraction form
    157,639.10/217,536.13 = 86,017.58/x
  3. Step 3: Cross multiply
    157,639.10x = 217,536.13 × 86,017.58
  4. Step 4: Simplify right side
    157,639.10x = 18,711,931,300.77
  5. Step 5: Solve for x
    x = 18,711,931,300.77/157,639.10
  6. Step 6: Final answer
    x = 118,701.08

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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.