Home / 157,639.75-217,547.64-89,666.50

Finding the Fourth Proportional to 157,639.75, 217,547.64 and 89,666.50

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Solution

The fourth proportional to 157,639.75, 217,547.64 and 89,666.50 is: 123,742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,639.75 : 217,547.64 = 89,666.50 : x
  2. Step 2: Convert to fraction form
    157,639.75/217,547.64 = 89,666.50/x
  3. Step 3: Cross multiply
    157,639.75x = 217,547.64 × 89,666.50
  4. Step 4: Simplify right side
    157,639.75x = 19,506,735,462.06
  5. Step 5: Solve for x
    x = 19,506,735,462.06/157,639.75
  6. Step 6: Final answer
    x = 123,742.49

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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.