Home / 102,688.09-153,681.67-86,066.89

Finding the Fourth Proportional to 102,688.09, 153,681.67 and 86,066.89

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Solution

The fourth proportional to 102,688.09, 153,681.67 and 86,066.89 is: 128,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,688.09 : 153,681.67 = 86,066.89 : x
  2. Step 2: Convert to fraction form
    102,688.09/153,681.67 = 86,066.89/x
  3. Step 3: Cross multiply
    102,688.09x = 153,681.67 × 86,066.89
  4. Step 4: Simplify right side
    102,688.09x = 13,226,903,386.91
  5. Step 5: Solve for x
    x = 13,226,903,386.91/102,688.09
  6. Step 6: Final answer
    x = 128,806.60

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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.