Home / 90,858.22-136,159.75-77,461.93

Finding the Fourth Proportional to 90,858.22, 136,159.75 and 77,461.93

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Solution

The fourth proportional to 90,858.22, 136,159.75 and 77,461.93 is: 116,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.22 : 136,159.75 = 77,461.93 : x
  2. Step 2: Convert to fraction form
    90,858.22/136,159.75 = 77,461.93/x
  3. Step 3: Cross multiply
    90,858.22x = 136,159.75 × 77,461.93
  4. Step 4: Simplify right side
    90,858.22x = 10,547,197,290.34
  5. Step 5: Solve for x
    x = 10,547,197,290.34/90,858.22
  6. Step 6: Final answer
    x = 116,084.13

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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.